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Finding the Fourth Proportional to 86,987.20, 130,480.80 and 24,658.24

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Solution

The fourth proportional to 86,987.20, 130,480.80 and 24,658.24 is: 36,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.20 : 130,480.80 = 24,658.24 : x
  2. Step 2: Convert to fraction form
    86,987.20/130,480.80 = 24,658.24/x
  3. Step 3: Cross multiply
    86,987.20x = 130,480.80 × 24,658.24
  4. Step 4: Simplify right side
    86,987.20x = 3,217,426,881.79
  5. Step 5: Solve for x
    x = 3,217,426,881.79/86,987.20
  6. Step 6: Final answer
    x = 36,987.36

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Similar ratio
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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.