Home / 81,397.53-112,327.38-45,588.78

Finding the Fourth Proportional to 81,397.53, 112,327.38 and 45,588.78

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Solution

The fourth proportional to 81,397.53, 112,327.38 and 45,588.78 is: 62,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.53 : 112,327.38 = 45,588.78 : x
  2. Step 2: Convert to fraction form
    81,397.53/112,327.38 = 45,588.78/x
  3. Step 3: Cross multiply
    81,397.53x = 112,327.38 × 45,588.78
  4. Step 4: Simplify right side
    81,397.53x = 5,120,868,214.80
  5. Step 5: Solve for x
    x = 5,120,868,214.80/81,397.53
  6. Step 6: Final answer
    x = 62,911.84

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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.