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Finding the Fourth Proportional to 81,277.55, 112,167.24 and 45,468.16

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Solution

The fourth proportional to 81,277.55, 112,167.24 and 45,468.16 is: 62,748.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.55 : 112,167.24 = 45,468.16 : x
  2. Step 2: Convert to fraction form
    81,277.55/112,167.24 = 45,468.16/x
  3. Step 3: Cross multiply
    81,277.55x = 112,167.24 × 45,468.16
  4. Step 4: Simplify right side
    81,277.55x = 5,100,038,015.08
  5. Step 5: Solve for x
    x = 5,100,038,015.08/81,277.55
  6. Step 6: Final answer
    x = 62,748.42

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Double scale
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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.