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Finding the Fourth Proportional to 71,492.76, 98,660.13 and 39,661.66

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Solution

The fourth proportional to 71,492.76, 98,660.13 and 39,661.66 is: 54,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,492.76 : 98,660.13 = 39,661.66 : x
  2. Step 2: Convert to fraction form
    71,492.76/98,660.13 = 39,661.66/x
  3. Step 3: Cross multiply
    71,492.76x = 98,660.13 × 39,661.66
  4. Step 4: Simplify right side
    71,492.76x = 3,913,024,333.31
  5. Step 5: Solve for x
    x = 3,913,024,333.31/71,492.76
  6. Step 6: Final answer
    x = 54,733.16

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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.