Home / 78,475.94-108,298.92-42,668.36

Finding the Fourth Proportional to 78,475.94, 108,298.92 and 42,668.36

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Solution

The fourth proportional to 78,475.94, 108,298.92 and 42,668.36 is: 58,883.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,475.94 : 108,298.92 = 42,668.36 : x
  2. Step 2: Convert to fraction form
    78,475.94/108,298.92 = 42,668.36/x
  3. Step 3: Cross multiply
    78,475.94x = 108,298.92 × 42,668.36
  4. Step 4: Simplify right side
    78,475.94x = 4,620,937,306.17
  5. Step 5: Solve for x
    x = 4,620,937,306.17/78,475.94
  6. Step 6: Final answer
    x = 58,883.49

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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.