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Finding the Fourth Proportional to 79,478.31, 119,235.92 and 23,316.15

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Solution

The fourth proportional to 79,478.31, 119,235.92 and 23,316.15 is: 34,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,478.31 : 119,235.92 = 23,316.15 : x
  2. Step 2: Convert to fraction form
    79,478.31/119,235.92 = 23,316.15/x
  3. Step 3: Cross multiply
    79,478.31x = 119,235.92 × 23,316.15
  4. Step 4: Simplify right side
    79,478.31x = 2,780,123,123.39
  5. Step 5: Solve for x
    x = 2,780,123,123.39/79,478.31
  6. Step 6: Final answer
    x = 34,979.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.