Home / 80,681.28-111,351.84-48,417.36

Finding the Fourth Proportional to 80,681.28, 111,351.84 and 48,417.36

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Solution

The fourth proportional to 80,681.28, 111,351.84 and 48,417.36 is: 66,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,681.28 : 111,351.84 = 48,417.36 : x
  2. Step 2: Convert to fraction form
    80,681.28/111,351.84 = 48,417.36/x
  3. Step 3: Cross multiply
    80,681.28x = 111,351.84 × 48,417.36
  4. Step 4: Simplify right side
    80,681.28x = 5,391,362,123.94
  5. Step 5: Solve for x
    x = 5,391,362,123.94/80,681.28
  6. Step 6: Final answer
    x = 66,822.96

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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.