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Finding the Fourth Proportional to 63,138.60, 87,129.54 and 34,842.24

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Solution

The fourth proportional to 63,138.60, 87,129.54 and 34,842.24 is: 48,081.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.60 : 87,129.54 = 34,842.24 : x
  2. Step 2: Convert to fraction form
    63,138.60/87,129.54 = 34,842.24/x
  3. Step 3: Cross multiply
    63,138.60x = 87,129.54 × 34,842.24
  4. Step 4: Simplify right side
    63,138.60x = 3,035,788,343.77
  5. Step 5: Solve for x
    x = 3,035,788,343.77/63,138.60
  6. Step 6: Final answer
    x = 48,081.34

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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.