Home / 45,187.12-67,766.40-42,238.84

Finding the Fourth Proportional to 45,187.12, 67,766.40 and 42,238.84

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Solution

The fourth proportional to 45,187.12, 67,766.40 and 42,238.84 is: 63,344.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,187.12 : 67,766.40 = 42,238.84 : x
  2. Step 2: Convert to fraction form
    45,187.12/67,766.40 = 42,238.84/x
  3. Step 3: Cross multiply
    45,187.12x = 67,766.40 × 42,238.84
  4. Step 4: Simplify right side
    45,187.12x = 2,862,374,126.98
  5. Step 5: Solve for x
    x = 2,862,374,126.98/45,187.12
  6. Step 6: Final answer
    x = 63,344.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.