Home / 90,711.12-136,042.08-57,381.12

Finding the Fourth Proportional to 90,711.12, 136,042.08 and 57,381.12

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Solution

The fourth proportional to 90,711.12, 136,042.08 and 57,381.12 is: 86,056.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,711.12 : 136,042.08 = 57,381.12 : x
  2. Step 2: Convert to fraction form
    90,711.12/136,042.08 = 57,381.12/x
  3. Step 3: Cross multiply
    90,711.12x = 136,042.08 × 57,381.12
  4. Step 4: Simplify right side
    90,711.12x = 7,806,246,917.53
  5. Step 5: Solve for x
    x = 7,806,246,917.53/90,711.12
  6. Step 6: Final answer
    x = 86,056.12

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1.5x scale

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.