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Finding the Fourth Proportional to 81,575.93, 112,575.87 and 45,763.80

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Solution

The fourth proportional to 81,575.93, 112,575.87 and 45,763.80 is: 63,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,575.93 : 112,575.87 = 45,763.80 : x
  2. Step 2: Convert to fraction form
    81,575.93/112,575.87 = 45,763.80/x
  3. Step 3: Cross multiply
    81,575.93x = 112,575.87 × 45,763.80
  4. Step 4: Simplify right side
    81,575.93x = 5,151,899,599.51
  5. Step 5: Solve for x
    x = 5,151,899,599.51/81,575.93
  6. Step 6: Final answer
    x = 63,154.66

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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.