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Finding the Fourth Proportional to 86,932.55, 130,404.90 and 34,335.20

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Solution

The fourth proportional to 86,932.55, 130,404.90 and 34,335.20 is: 51,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,932.55 : 130,404.90 = 34,335.20 : x
  2. Step 2: Convert to fraction form
    86,932.55/130,404.90 = 34,335.20/x
  3. Step 3: Cross multiply
    86,932.55x = 130,404.90 × 34,335.20
  4. Step 4: Simplify right side
    86,932.55x = 4,477,478,322.48
  5. Step 5: Solve for x
    x = 4,477,478,322.48/86,932.55
  6. Step 6: Final answer
    x = 51,505.20

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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.