Home / 78,644.28-108,532.20-45,116.76

Finding the Fourth Proportional to 78,644.28, 108,532.20 and 45,116.76

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Solution

The fourth proportional to 78,644.28, 108,532.20 and 45,116.76 is: 62,262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,644.28 : 108,532.20 = 45,116.76 : x
  2. Step 2: Convert to fraction form
    78,644.28/108,532.20 = 45,116.76/x
  3. Step 3: Cross multiply
    78,644.28x = 108,532.20 × 45,116.76
  4. Step 4: Simplify right side
    78,644.28x = 4,896,621,219.67
  5. Step 5: Solve for x
    x = 4,896,621,219.67/78,644.28
  6. Step 6: Final answer
    x = 62,262.90

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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.