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Finding the Fourth Proportional to 72,305.10, 108,348.30 and 61,151.40

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Solution

The fourth proportional to 72,305.10, 108,348.30 and 61,151.40 is: 91,634.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,305.10 : 108,348.30 = 61,151.40 : x
  2. Step 2: Convert to fraction form
    72,305.10/108,348.30 = 61,151.40/x
  3. Step 3: Cross multiply
    72,305.10x = 108,348.30 × 61,151.40
  4. Step 4: Simplify right side
    72,305.10x = 6,625,650,232.62
  5. Step 5: Solve for x
    x = 6,625,650,232.62/72,305.10
  6. Step 6: Final answer
    x = 91,634.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.