Home / 78,641,111.20-117,961,666.80-52,942,986.40

Finding the Fourth Proportional to 78,641,111.20, 117,961,666.80 and 52,942,986.40

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Solution

The fourth proportional to 78,641,111.20, 117,961,666.80 and 52,942,986.40 is: 79,414,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,641,111.20 : 117,961,666.80 = 52,942,986.40 : x
  2. Step 2: Convert to fraction form
    78,641,111.20/117,961,666.80 = 52,942,986.40/x
  3. Step 3: Cross multiply
    78,641,111.20x = 117,961,666.80 × 52,942,986.40
  4. Step 4: Simplify right side
    78,641,111.20x = 6,245,242,921,113,731
  5. Step 5: Solve for x
    x = 6,245,242,921,113,731/78,641,111.20
  6. Step 6: Final answer
    x = 79,414,479.60

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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.