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Finding the Fourth Proportional to 78,248.83, 108,025.24 and 61,216.87

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Solution

The fourth proportional to 78,248.83, 108,025.24 and 61,216.87 is: 84,512.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,248.83 : 108,025.24 = 61,216.87 : x
  2. Step 2: Convert to fraction form
    78,248.83/108,025.24 = 61,216.87/x
  3. Step 3: Cross multiply
    78,248.83x = 108,025.24 × 61,216.87
  4. Step 4: Simplify right side
    78,248.83x = 6,612,967,073.80
  5. Step 5: Solve for x
    x = 6,612,967,073.80/78,248.83
  6. Step 6: Final answer
    x = 84,512.02

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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.