Home / 78,755,840.80-118,098,331.80-30,217,562.80

Finding the Fourth Proportional to 78,755,840.80, 118,098,331.80 and 30,217,562.80

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Solution

The fourth proportional to 78,755,840.80, 118,098,331.80 and 30,217,562.80 is: 45,312,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,755,840.80 : 118,098,331.80 = 30,217,562.80 : x
  2. Step 2: Convert to fraction form
    78,755,840.80/118,098,331.80 = 30,217,562.80/x
  3. Step 3: Cross multiply
    78,755,840.80x = 118,098,331.80 × 30,217,562.80
  4. Step 4: Simplify right side
    78,755,840.80x = 3,568,643,757,741,737
  5. Step 5: Solve for x
    x = 3,568,643,757,741,737/78,755,840.80
  6. Step 6: Final answer
    x = 45,312,750.41

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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.