Home / 87,181,434.91-120,318,886.81-65,116,668.89

Finding the Fourth Proportional to 87,181,434.91, 120,318,886.81 and 65,116,668.89

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Solution

The fourth proportional to 87,181,434.91, 120,318,886.81 and 65,116,668.89 is: 89,867,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,181,434.91 : 120,318,886.81 = 65,116,668.89 : x
  2. Step 2: Convert to fraction form
    87,181,434.91/120,318,886.81 = 65,116,668.89/x
  3. Step 3: Cross multiply
    87,181,434.91x = 120,318,886.81 × 65,116,668.89
  4. Step 4: Simplify right side
    87,181,434.91x = 7,834,765,113,635,744
  5. Step 5: Solve for x
    x = 7,834,765,113,635,744/87,181,434.91
  6. Step 6: Final answer
    x = 89,867,356.76

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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.