Home / 91,148.12-136,736.76-38,572.64

Finding the Fourth Proportional to 91,148.12, 136,736.76 and 38,572.64

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Solution

The fourth proportional to 91,148.12, 136,736.76 and 38,572.64 is: 57,865.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,148.12 : 136,736.76 = 38,572.64 : x
  2. Step 2: Convert to fraction form
    91,148.12/136,736.76 = 38,572.64/x
  3. Step 3: Cross multiply
    91,148.12x = 136,736.76 × 38,572.64
  4. Step 4: Simplify right side
    91,148.12x = 5,274,297,818.25
  5. Step 5: Solve for x
    x = 5,274,297,818.25/91,148.12
  6. Step 6: Final answer
    x = 57,865.13

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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.