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Finding the Fourth Proportional to 71,275.74, 98,356.44 and 39,442.74

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Solution

The fourth proportional to 71,275.74, 98,356.44 and 39,442.74 is: 54,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,275.74 : 98,356.44 = 39,442.74 : x
  2. Step 2: Convert to fraction form
    71,275.74/98,356.44 = 39,442.74/x
  3. Step 3: Cross multiply
    71,275.74x = 98,356.44 × 39,442.74
  4. Step 4: Simplify right side
    71,275.74x = 3,879,447,490.25
  5. Step 5: Solve for x
    x = 3,879,447,490.25/71,275.74
  6. Step 6: Final answer
    x = 54,428.72

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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.