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Finding the Fourth Proportional to 72,437,807.70, 108,656,711.55 and 18,585,119.70

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Solution

The fourth proportional to 72,437,807.70, 108,656,711.55 and 18,585,119.70 is: 27,877,679.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,437,807.70 : 108,656,711.55 = 18,585,119.70 : x
  2. Step 2: Convert to fraction form
    72,437,807.70/108,656,711.55 = 18,585,119.70/x
  3. Step 3: Cross multiply
    72,437,807.70x = 108,656,711.55 × 18,585,119.70
  4. Step 4: Simplify right side
    72,437,807.70x = 2,019,397,990,365,122.50
  5. Step 5: Solve for x
    x = 2,019,397,990,365,122.50/72,437,807.70
  6. Step 6: Final answer
    x = 27,877,679.55

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Similar ratio
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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.