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Finding the Fourth Proportional to 81,588.96, 112,594.48 and 45,781.56

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Solution

The fourth proportional to 81,588.96, 112,594.48 and 45,781.56 is: 63,179.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,588.96 : 112,594.48 = 45,781.56 : x
  2. Step 2: Convert to fraction form
    81,588.96/112,594.48 = 45,781.56/x
  3. Step 3: Cross multiply
    81,588.96x = 112,594.48 × 45,781.56
  4. Step 4: Simplify right side
    81,588.96x = 5,154,750,941.79
  5. Step 5: Solve for x
    x = 5,154,750,941.79/81,588.96
  6. Step 6: Final answer
    x = 63,179.52

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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.