Home / 78,519.18-108,353.37-42,709.14

Finding the Fourth Proportional to 78,519.18, 108,353.37 and 42,709.14

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Solution

The fourth proportional to 78,519.18, 108,353.37 and 42,709.14 is: 58,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,519.18 : 108,353.37 = 42,709.14 : x
  2. Step 2: Convert to fraction form
    78,519.18/108,353.37 = 42,709.14/x
  3. Step 3: Cross multiply
    78,519.18x = 108,353.37 × 42,709.14
  4. Step 4: Simplify right side
    78,519.18x = 4,627,679,248.80
  5. Step 5: Solve for x
    x = 4,627,679,248.80/78,519.18
  6. Step 6: Final answer
    x = 58,936.93

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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.