Home / 81,250.12-112,126.98-57,418.84

Finding the Fourth Proportional to 81,250.12, 112,126.98 and 57,418.84

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Solution

The fourth proportional to 81,250.12, 112,126.98 and 57,418.84 is: 79,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,250.12 : 112,126.98 = 57,418.84 : x
  2. Step 2: Convert to fraction form
    81,250.12/112,126.98 = 57,418.84/x
  3. Step 3: Cross multiply
    81,250.12x = 112,126.98 × 57,418.84
  4. Step 4: Simplify right side
    81,250.12x = 6,438,201,124.30
  5. Step 5: Solve for x
    x = 6,438,201,124.30/81,250.12
  6. Step 6: Final answer
    x = 79,239.28

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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.