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Finding the Fourth Proportional to 71,260.61, 98,338.10 and 38,995.08

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Solution

The fourth proportional to 71,260.61, 98,338.10 and 38,995.08 is: 53,812.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,260.61 : 98,338.10 = 38,995.08 : x
  2. Step 2: Convert to fraction form
    71,260.61/98,338.10 = 38,995.08/x
  3. Step 3: Cross multiply
    71,260.61x = 98,338.10 × 38,995.08
  4. Step 4: Simplify right side
    71,260.61x = 3,834,701,881.57
  5. Step 5: Solve for x
    x = 3,834,701,881.57/71,260.61
  6. Step 6: Final answer
    x = 53,812.37

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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.