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Finding the Fourth Proportional to 72,988.32, 109,482.48 and 41,801.76

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Solution

The fourth proportional to 72,988.32, 109,482.48 and 41,801.76 is: 62,702.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,988.32 : 109,482.48 = 41,801.76 : x
  2. Step 2: Convert to fraction form
    72,988.32/109,482.48 = 41,801.76/x
  3. Step 3: Cross multiply
    72,988.32x = 109,482.48 × 41,801.76
  4. Step 4: Simplify right side
    72,988.32x = 4,576,560,353.16
  5. Step 5: Solve for x
    x = 4,576,560,353.16/72,988.32
  6. Step 6: Final answer
    x = 62,702.64

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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.