Home / 91,031.40-136,474.20-38,397.60

Finding the Fourth Proportional to 91,031.40, 136,474.20 and 38,397.60

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Solution

The fourth proportional to 91,031.40, 136,474.20 and 38,397.60 is: 57,565.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,031.40 : 136,474.20 = 38,397.60 : x
  2. Step 2: Convert to fraction form
    91,031.40/136,474.20 = 38,397.60/x
  3. Step 3: Cross multiply
    91,031.40x = 136,474.20 × 38,397.60
  4. Step 4: Simplify right side
    91,031.40x = 5,240,281,741.92
  5. Step 5: Solve for x
    x = 5,240,281,741.92/91,031.40
  6. Step 6: Final answer
    x = 57,565.65

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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.