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Finding the Fourth Proportional to 72,279.80, 108,422.74 and 25,532.92

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Solution

The fourth proportional to 72,279.80, 108,422.74 and 25,532.92 is: 38,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,279.80 : 108,422.74 = 25,532.92 : x
  2. Step 2: Convert to fraction form
    72,279.80/108,422.74 = 25,532.92/x
  3. Step 3: Cross multiply
    72,279.80x = 108,422.74 × 25,532.92
  4. Step 4: Simplify right side
    72,279.80x = 2,768,349,146.60
  5. Step 5: Solve for x
    x = 2,768,349,146.60/72,279.80
  6. Step 6: Final answer
    x = 38,300.45

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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.