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Finding the Fourth Proportional to 30,545.28, 45,811.76 and 8,360.90

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Solution

The fourth proportional to 30,545.28, 45,811.76 and 8,360.90 is: 12,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,545.28 : 45,811.76 = 8,360.90 : x
  2. Step 2: Convert to fraction form
    30,545.28/45,811.76 = 8,360.90/x
  3. Step 3: Cross multiply
    30,545.28x = 45,811.76 × 8,360.90
  4. Step 4: Simplify right side
    30,545.28x = 383,027,315.13
  5. Step 5: Solve for x
    x = 383,027,315.13/30,545.28
  6. Step 6: Final answer
    x = 12,539.66

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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.