Home / 78,343,977.60-117,534,628.80-37,921,219.20

Finding the Fourth Proportional to 78,343,977.60, 117,534,628.80 and 37,921,219.20

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Solution

The fourth proportional to 78,343,977.60, 117,534,628.80 and 37,921,219.20 is: 56,890,862.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,343,977.60 : 117,534,628.80 = 37,921,219.20 : x
  2. Step 2: Convert to fraction form
    78,343,977.60/117,534,628.80 = 37,921,219.20/x
  3. Step 3: Cross multiply
    78,343,977.60x = 117,534,628.80 × 37,921,219.20
  4. Step 4: Simplify right side
    78,343,977.60x = 4,457,056,422,315,433
  5. Step 5: Solve for x
    x = 4,457,056,422,315,433/78,343,977.60
  6. Step 6: Final answer
    x = 56,890,862.05

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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.