Home / 45,535.92-68,312.11-20,587.72

Finding the Fourth Proportional to 45,535.92, 68,312.11 and 20,587.72

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Solution

The fourth proportional to 45,535.92, 68,312.11 and 20,587.72 is: 30,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,535.92 : 68,312.11 = 20,587.72 : x
  2. Step 2: Convert to fraction form
    45,535.92/68,312.11 = 20,587.72/x
  3. Step 3: Cross multiply
    45,535.92x = 68,312.11 × 20,587.72
  4. Step 4: Simplify right side
    45,535.92x = 1,406,390,371.04
  5. Step 5: Solve for x
    x = 1,406,390,371.04/45,535.92
  6. Step 6: Final answer
    x = 30,885.30

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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.