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Finding the Fourth Proportional to 60,479.28, 90,311.31 and 49,407.84

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Solution

The fourth proportional to 60,479.28, 90,311.31 and 49,407.84 is: 73,778.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,479.28 : 90,311.31 = 49,407.84 : x
  2. Step 2: Convert to fraction form
    60,479.28/90,311.31 = 49,407.84/x
  3. Step 3: Cross multiply
    60,479.28x = 90,311.31 × 49,407.84
  4. Step 4: Simplify right side
    60,479.28x = 4,462,086,754.67
  5. Step 5: Solve for x
    x = 4,462,086,754.67/60,479.28
  6. Step 6: Final answer
    x = 73,778.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.