Home / 91,029.71-136,564.16-34,869.78

Finding the Fourth Proportional to 91,029.71, 136,564.16 and 34,869.78

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Solution

The fourth proportional to 91,029.71, 136,564.16 and 34,869.78 is: 52,312.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,029.71 : 136,564.16 = 34,869.78 : x
  2. Step 2: Convert to fraction form
    91,029.71/136,564.16 = 34,869.78/x
  3. Step 3: Cross multiply
    91,029.71x = 136,564.16 × 34,869.78
  4. Step 4: Simplify right side
    91,029.71x = 4,761,962,215.08
  5. Step 5: Solve for x
    x = 4,761,962,215.08/91,029.71
  6. Step 6: Final answer
    x = 52,312.18

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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.