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Finding the Fourth Proportional to 91,644.53, 126,477.60 and 53,402

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Solution

The fourth proportional to 91,644.53, 126,477.60 and 53,402 is: 73,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,644.53 : 126,477.60 = 53,402 : x
  2. Step 2: Convert to fraction form
    91,644.53/126,477.60 = 53,402/x
  3. Step 3: Cross multiply
    91,644.53x = 126,477.60 × 53,402
  4. Step 4: Simplify right side
    91,644.53x = 6,754,156,795.20
  5. Step 5: Solve for x
    x = 6,754,156,795.20/91,644.53
  6. Step 6: Final answer
    x = 73,699.51

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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.