Home / 78,743.55-108,666.60-42,934.16

Finding the Fourth Proportional to 78,743.55, 108,666.60 and 42,934.16

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Solution

The fourth proportional to 78,743.55, 108,666.60 and 42,934.16 is: 59,249.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.55 : 108,666.60 = 42,934.16 : x
  2. Step 2: Convert to fraction form
    78,743.55/108,666.60 = 42,934.16/x
  3. Step 3: Cross multiply
    78,743.55x = 108,666.60 × 42,934.16
  4. Step 4: Simplify right side
    78,743.55x = 4,665,508,647.72
  5. Step 5: Solve for x
    x = 4,665,508,647.72/78,743.55
  6. Step 6: Final answer
    x = 59,249.41

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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.