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Finding the Fourth Proportional to 81,305.64, 112,166.64 and 57,452.76

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Solution

The fourth proportional to 81,305.64, 112,166.64 and 57,452.76 is: 79,259.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,305.64 : 112,166.64 = 57,452.76 : x
  2. Step 2: Convert to fraction form
    81,305.64/112,166.64 = 57,452.76/x
  3. Step 3: Cross multiply
    81,305.64x = 112,166.64 × 57,452.76
  4. Step 4: Simplify right side
    81,305.64x = 6,444,283,047.93
  5. Step 5: Solve for x
    x = 6,444,283,047.93/81,305.64
  6. Step 6: Final answer
    x = 79,259.98

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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.