Home / 86,339,728.80-129,341,631.60-52,159,543.20

Finding the Fourth Proportional to 86,339,728.80, 129,341,631.60 and 52,159,543.20

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Solution

The fourth proportional to 86,339,728.80, 129,341,631.60 and 52,159,543.20 is: 78,137,845.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,339,728.80 : 129,341,631.60 = 52,159,543.20 : x
  2. Step 2: Convert to fraction form
    86,339,728.80/129,341,631.60 = 52,159,543.20/x
  3. Step 3: Cross multiply
    86,339,728.80x = 129,341,631.60 × 52,159,543.20
  4. Step 4: Simplify right side
    86,339,728.80x = 6,746,400,420,998,685
  5. Step 5: Solve for x
    x = 6,746,400,420,998,685/86,339,728.80
  6. Step 6: Final answer
    x = 78,137,845.86

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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.