Home / 78,299.16-108,053.12-42,489.18

Finding the Fourth Proportional to 78,299.16, 108,053.12 and 42,489.18

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Solution

The fourth proportional to 78,299.16, 108,053.12 and 42,489.18 is: 58,635.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299.16 : 108,053.12 = 42,489.18 : x
  2. Step 2: Convert to fraction form
    78,299.16/108,053.12 = 42,489.18/x
  3. Step 3: Cross multiply
    78,299.16x = 108,053.12 × 42,489.18
  4. Step 4: Simplify right side
    78,299.16x = 4,591,088,465.24
  5. Step 5: Solve for x
    x = 4,591,088,465.24/78,299.16
  6. Step 6: Final answer
    x = 58,635.22

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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.