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Finding the Fourth Proportional to 76,319.52, 105,373.17 and 47,682.87

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Solution

The fourth proportional to 76,319.52, 105,373.17 and 47,682.87 is: 65,834.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,319.52 : 105,373.17 = 47,682.87 : x
  2. Step 2: Convert to fraction form
    76,319.52/105,373.17 = 47,682.87/x
  3. Step 3: Cross multiply
    76,319.52x = 105,373.17 × 47,682.87
  4. Step 4: Simplify right side
    76,319.52x = 5,024,495,166.60
  5. Step 5: Solve for x
    x = 5,024,495,166.60/76,319.52
  6. Step 6: Final answer
    x = 65,834.99

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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.