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Finding the Fourth Proportional to 72,159.84, 99,543.84 and 48,287.52

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Solution

The fourth proportional to 72,159.84, 99,543.84 and 48,287.52 is: 66,612.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,159.84 : 99,543.84 = 48,287.52 : x
  2. Step 2: Convert to fraction form
    72,159.84/99,543.84 = 48,287.52/x
  3. Step 3: Cross multiply
    72,159.84x = 99,543.84 × 48,287.52
  4. Step 4: Simplify right side
    72,159.84x = 4,806,725,164.88
  5. Step 5: Solve for x
    x = 4,806,725,164.88/72,159.84
  6. Step 6: Final answer
    x = 66,612.19

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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.