Home / 91,140.12-136,724.76-38,564.64

Finding the Fourth Proportional to 91,140.12, 136,724.76 and 38,564.64

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Solution

The fourth proportional to 91,140.12, 136,724.76 and 38,564.64 is: 57,853.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,140.12 : 136,724.76 = 38,564.64 : x
  2. Step 2: Convert to fraction form
    91,140.12/136,724.76 = 38,564.64/x
  3. Step 3: Cross multiply
    91,140.12x = 136,724.76 × 38,564.64
  4. Step 4: Simplify right side
    91,140.12x = 5,272,741,148.49
  5. Step 5: Solve for x
    x = 5,272,741,148.49/91,140.12
  6. Step 6: Final answer
    x = 57,853.13

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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.