Home / 78,727,144.38-108,643,505.94-43,919,834.76

Finding the Fourth Proportional to 78,727,144.38, 108,643,505.94 and 43,919,834.76

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Solution

The fourth proportional to 78,727,144.38, 108,643,505.94 and 43,919,834.76 is: 60,609,398.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727,144.38 : 108,643,505.94 = 43,919,834.76 : x
  2. Step 2: Convert to fraction form
    78,727,144.38/108,643,505.94 = 43,919,834.76/x
  3. Step 3: Cross multiply
    78,727,144.38x = 108,643,505.94 × 43,919,834.76
  4. Step 4: Simplify right side
    78,727,144.38x = 4,771,604,828,631,878
  5. Step 5: Solve for x
    x = 4,771,604,828,631,878/78,727,144.38
  6. Step 6: Final answer
    x = 60,609,398.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.