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Finding the Fourth Proportional to 71,325.95, 98,422.92 and 42,639.93

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Solution

The fourth proportional to 71,325.95, 98,422.92 and 42,639.93 is: 58,838.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,325.95 : 98,422.92 = 42,639.93 : x
  2. Step 2: Convert to fraction form
    71,325.95/98,422.92 = 42,639.93/x
  3. Step 3: Cross multiply
    71,325.95x = 98,422.92 × 42,639.93
  4. Step 4: Simplify right side
    71,325.95x = 4,196,746,419.20
  5. Step 5: Solve for x
    x = 4,196,746,419.20/71,325.95
  6. Step 6: Final answer
    x = 58,838.99

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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.