Home / 45,117.13-67,689.53-20,178.15

Finding the Fourth Proportional to 45,117.13, 67,689.53 and 20,178.15

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Solution

The fourth proportional to 45,117.13, 67,689.53 and 20,178.15 is: 30,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117.13 : 67,689.53 = 20,178.15 : x
  2. Step 2: Convert to fraction form
    45,117.13/67,689.53 = 20,178.15/x
  3. Step 3: Cross multiply
    45,117.13x = 67,689.53 × 20,178.15
  4. Step 4: Simplify right side
    45,117.13x = 1,365,849,510.46
  5. Step 5: Solve for x
    x = 1,365,849,510.46/45,117.13
  6. Step 6: Final answer
    x = 30,273.42

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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.