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Finding the Fourth Proportional to 71,246.64, 98,316.48 and 39,410.40

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Solution

The fourth proportional to 71,246.64, 98,316.48 and 39,410.40 is: 54,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,246.64 : 98,316.48 = 39,410.40 : x
  2. Step 2: Convert to fraction form
    71,246.64/98,316.48 = 39,410.40/x
  3. Step 3: Cross multiply
    71,246.64x = 98,316.48 × 39,410.40
  4. Step 4: Simplify right side
    71,246.64x = 3,874,691,803.39
  5. Step 5: Solve for x
    x = 3,874,691,803.39/71,246.64
  6. Step 6: Final answer
    x = 54,384.20

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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.