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Finding the Fourth Proportional to 47,861.95, 66,031.72 and 47,788.14

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Solution

The fourth proportional to 47,861.95, 66,031.72 and 47,788.14 is: 65,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,861.95 : 66,031.72 = 47,788.14 : x
  2. Step 2: Convert to fraction form
    47,861.95/66,031.72 = 47,788.14/x
  3. Step 3: Cross multiply
    47,861.95x = 66,031.72 × 47,788.14
  4. Step 4: Simplify right side
    47,861.95x = 3,155,533,079.80
  5. Step 5: Solve for x
    x = 3,155,533,079.80/47,861.95
  6. Step 6: Final answer
    x = 65,929.89

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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.