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Finding the Fourth Proportional to 71,376.78, 98,455.39 and 45,916.33

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Solution

The fourth proportional to 71,376.78, 98,455.39 and 45,916.33 is: 63,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,376.78 : 98,455.39 = 45,916.33 : x
  2. Step 2: Convert to fraction form
    71,376.78/98,455.39 = 45,916.33/x
  3. Step 3: Cross multiply
    71,376.78x = 98,455.39 × 45,916.33
  4. Step 4: Simplify right side
    71,376.78x = 4,520,710,177.52
  5. Step 5: Solve for x
    x = 4,520,710,177.52/71,376.78
  6. Step 6: Final answer
    x = 63,335.87

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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.