Home / 45,142.04-67,719.36-18,840.76

Finding the Fourth Proportional to 45,142.04, 67,719.36 and 18,840.76

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Solution

The fourth proportional to 45,142.04, 67,719.36 and 18,840.76 is: 28,263.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,142.04 : 67,719.36 = 18,840.76 : x
  2. Step 2: Convert to fraction form
    45,142.04/67,719.36 = 18,840.76/x
  3. Step 3: Cross multiply
    45,142.04x = 67,719.36 × 18,840.76
  4. Step 4: Simplify right side
    45,142.04x = 1,275,884,209.11
  5. Step 5: Solve for x
    x = 1,275,884,209.11/45,142.04
  6. Step 6: Final answer
    x = 28,263.77

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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.