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Finding the Fourth Proportional to 71,393.30, 106,987.55 and 52,526.10

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Solution

The fourth proportional to 71,393.30, 106,987.55 and 52,526.10 is: 78,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.30 : 106,987.55 = 52,526.10 : x
  2. Step 2: Convert to fraction form
    71,393.30/106,987.55 = 52,526.10/x
  3. Step 3: Cross multiply
    71,393.30x = 106,987.55 × 52,526.10
  4. Step 4: Simplify right side
    71,393.30x = 5,619,638,750.06
  5. Step 5: Solve for x
    x = 5,619,638,750.06/71,393.30
  6. Step 6: Final answer
    x = 78,713.81

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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.