Home / 78,250,807.80-117,376,211.70-20,748,891.60

Finding the Fourth Proportional to 78,250,807.80, 117,376,211.70 and 20,748,891.60

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Solution

The fourth proportional to 78,250,807.80, 117,376,211.70 and 20,748,891.60 is: 31,123,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,250,807.80 : 117,376,211.70 = 20,748,891.60 : x
  2. Step 2: Convert to fraction form
    78,250,807.80/117,376,211.70 = 20,748,891.60/x
  3. Step 3: Cross multiply
    78,250,807.80x = 117,376,211.70 × 20,748,891.60
  4. Step 4: Simplify right side
    78,250,807.80x = 2,435,426,292,981,952
  5. Step 5: Solve for x
    x = 2,435,426,292,981,952/78,250,807.80
  6. Step 6: Final answer
    x = 31,123,337.40

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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.