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Finding the Fourth Proportional to 65,645.76, 98,498.88 and 40,715.04

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Solution

The fourth proportional to 65,645.76, 98,498.88 and 40,715.04 is: 61,091.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,645.76 : 98,498.88 = 40,715.04 : x
  2. Step 2: Convert to fraction form
    65,645.76/98,498.88 = 40,715.04/x
  3. Step 3: Cross multiply
    65,645.76x = 98,498.88 × 40,715.04
  4. Step 4: Simplify right side
    65,645.76x = 4,010,385,839.16
  5. Step 5: Solve for x
    x = 4,010,385,839.16/65,645.76
  6. Step 6: Final answer
    x = 61,091.32

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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.