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Finding the Fourth Proportional to 71,399.72, 98,534.10 and 43,099.88

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Solution

The fourth proportional to 71,399.72, 98,534.10 and 43,099.88 is: 59,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,399.72 : 98,534.10 = 43,099.88 : x
  2. Step 2: Convert to fraction form
    71,399.72/98,534.10 = 43,099.88/x
  3. Step 3: Cross multiply
    71,399.72x = 98,534.10 × 43,099.88
  4. Step 4: Simplify right side
    71,399.72x = 4,246,807,885.91
  5. Step 5: Solve for x
    x = 4,246,807,885.91/71,399.72
  6. Step 6: Final answer
    x = 59,479.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.