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Finding the Fourth Proportional to 71,557.90, 98,681.90 and 52,159.18

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Solution

The fourth proportional to 71,557.90, 98,681.90 and 52,159.18 is: 71,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,557.90 : 98,681.90 = 52,159.18 : x
  2. Step 2: Convert to fraction form
    71,557.90/98,681.90 = 52,159.18/x
  3. Step 3: Cross multiply
    71,557.90x = 98,681.90 × 52,159.18
  4. Step 4: Simplify right side
    71,557.90x = 5,147,166,984.84
  5. Step 5: Solve for x
    x = 5,147,166,984.84/71,557.90
  6. Step 6: Final answer
    x = 71,930.10

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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.