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Finding the Fourth Proportional to 71,254.68, 98,327.88 and 38,988.60

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Solution

The fourth proportional to 71,254.68, 98,327.88 and 38,988.60 is: 53,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,254.68 : 98,327.88 = 38,988.60 : x
  2. Step 2: Convert to fraction form
    71,254.68/98,327.88 = 38,988.60/x
  3. Step 3: Cross multiply
    71,254.68x = 98,327.88 × 38,988.60
  4. Step 4: Simplify right side
    71,254.68x = 3,833,666,382.17
  5. Step 5: Solve for x
    x = 3,833,666,382.17/71,254.68
  6. Step 6: Final answer
    x = 53,802.31

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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.