Home / 45,142.17-67,719.55-18,840.89

Finding the Fourth Proportional to 45,142.17, 67,719.55 and 18,840.89

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Solution

The fourth proportional to 45,142.17, 67,719.55 and 18,840.89 is: 28,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,142.17 : 67,719.55 = 18,840.89 : x
  2. Step 2: Convert to fraction form
    45,142.17/67,719.55 = 18,840.89/x
  3. Step 3: Cross multiply
    45,142.17x = 67,719.55 × 18,840.89
  4. Step 4: Simplify right side
    45,142.17x = 1,275,896,592.40
  5. Step 5: Solve for x
    x = 1,275,896,592.40/45,142.17
  6. Step 6: Final answer
    x = 28,263.96

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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.