Home / 45,118.12-67,685.40-15,129.40

Finding the Fourth Proportional to 45,118.12, 67,685.40 and 15,129.40

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Solution

The fourth proportional to 45,118.12, 67,685.40 and 15,129.40 is: 22,696.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,118.12 : 67,685.40 = 15,129.40 : x
  2. Step 2: Convert to fraction form
    45,118.12/67,685.40 = 15,129.40/x
  3. Step 3: Cross multiply
    45,118.12x = 67,685.40 × 15,129.40
  4. Step 4: Simplify right side
    45,118.12x = 1,024,039,490.76
  5. Step 5: Solve for x
    x = 1,024,039,490.76/45,118.12
  6. Step 6: Final answer
    x = 22,696.86

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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.