Home / 87,459,456.38-120,748,637.32-55,687,557.21

Finding the Fourth Proportional to 87,459,456.38, 120,748,637.32 and 55,687,557.21

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Solution

The fourth proportional to 87,459,456.38, 120,748,637.32 and 55,687,557.21 is: 76,883,586.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,459,456.38 : 120,748,637.32 = 55,687,557.21 : x
  2. Step 2: Convert to fraction form
    87,459,456.38/120,748,637.32 = 55,687,557.21/x
  3. Step 3: Cross multiply
    87,459,456.38x = 120,748,637.32 × 55,687,557.21
  4. Step 4: Simplify right side
    87,459,456.38x = 6,724,196,648,195,014
  5. Step 5: Solve for x
    x = 6,724,196,648,195,014/87,459,456.38
  6. Step 6: Final answer
    x = 76,883,586.14

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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.