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Finding the Fourth Proportional to 91,560, 126,266.40 and 59,753.28

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Solution

The fourth proportional to 91,560, 126,266.40 and 59,753.28 is: 82,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,560 : 126,266.40 = 59,753.28 : x
  2. Step 2: Convert to fraction form
    91,560/126,266.40 = 59,753.28/x
  3. Step 3: Cross multiply
    91,560x = 126,266.40 × 59,753.28
  4. Step 4: Simplify right side
    91,560x = 7,544,831,553.79
  5. Step 5: Solve for x
    x = 7,544,831,553.79/91,560
  6. Step 6: Final answer
    x = 82,403.14

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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.