Home / 45,402.10-68,103.15-40,390.90

Finding the Fourth Proportional to 45,402.10, 68,103.15 and 40,390.90

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Solution

The fourth proportional to 45,402.10, 68,103.15 and 40,390.90 is: 60,586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,402.10 : 68,103.15 = 40,390.90 : x
  2. Step 2: Convert to fraction form
    45,402.10/68,103.15 = 40,390.90/x
  3. Step 3: Cross multiply
    45,402.10x = 68,103.15 × 40,390.90
  4. Step 4: Simplify right side
    45,402.10x = 2,750,747,521.34
  5. Step 5: Solve for x
    x = 2,750,747,521.34/45,402.10
  6. Step 6: Final answer
    x = 60,586.35

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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.