Home / 76,478.28-105,543.66-42,486.85

Finding the Fourth Proportional to 76,478.28, 105,543.66 and 42,486.85

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Solution

The fourth proportional to 76,478.28, 105,543.66 and 42,486.85 is: 58,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,478.28 : 105,543.66 = 42,486.85 : x
  2. Step 2: Convert to fraction form
    76,478.28/105,543.66 = 42,486.85/x
  3. Step 3: Cross multiply
    76,478.28x = 105,543.66 × 42,486.85
  4. Step 4: Simplify right side
    76,478.28x = 4,484,217,650.87
  5. Step 5: Solve for x
    x = 4,484,217,650.87/76,478.28
  6. Step 6: Final answer
    x = 58,633.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.