Home / 91,397.39-136,901.69-53,917.07

Finding the Fourth Proportional to 91,397.39, 136,901.69 and 53,917.07

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Solution

The fourth proportional to 91,397.39, 136,901.69 and 53,917.07 is: 80,760.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,397.39 : 136,901.69 = 53,917.07 : x
  2. Step 2: Convert to fraction form
    91,397.39/136,901.69 = 53,917.07/x
  3. Step 3: Cross multiply
    91,397.39x = 136,901.69 × 53,917.07
  4. Step 4: Simplify right side
    91,397.39x = 7,381,337,733.26
  5. Step 5: Solve for x
    x = 7,381,337,733.26/91,397.39
  6. Step 6: Final answer
    x = 80,760.92

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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.