Home / 28,296,867,985.20-42,445,301,977.80-21,766,520,977.20

Finding the Fourth Proportional to 28,296,867,985.20, 42,445,301,977.80 and 21,766,520,977.20

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Solution

The fourth proportional to 28,296,867,985.20, 42,445,301,977.80 and 21,766,520,977.20 is: 32,649,781,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296,867,985.20 : 42,445,301,977.80 = 21,766,520,977.20 : x
  2. Step 2: Convert to fraction form
    28,296,867,985.20/42,445,301,977.80 = 21,766,520,977.20/x
  3. Step 3: Cross multiply
    28,296,867,985.20x = 42,445,301,977.80 × 21,766,520,977.20
  4. Step 4: Simplify right side
    28,296,867,985.20x = 923,886,555,883,372,412,928
  5. Step 5: Solve for x
    x = 923,886,555,883,372,412,928/28,296,867,985.20
  6. Step 6: Final answer
    x = 32,649,781,465.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.