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Finding the Fourth Proportional to 45,012, 62,116.56 and 25,140

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Solution

The fourth proportional to 45,012, 62,116.56 and 25,140 is: 34,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,012 : 62,116.56 = 25,140 : x
  2. Step 2: Convert to fraction form
    45,012/62,116.56 = 25,140/x
  3. Step 3: Cross multiply
    45,012x = 62,116.56 × 25,140
  4. Step 4: Simplify right side
    45,012x = 1,561,610,318.40
  5. Step 5: Solve for x
    x = 1,561,610,318.40/45,012
  6. Step 6: Final answer
    x = 34,693.20

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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.