Home / 81,289.46-112,178.48-45,479.36

Finding the Fourth Proportional to 81,289.46, 112,178.48 and 45,479.36

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Solution

The fourth proportional to 81,289.46, 112,178.48 and 45,479.36 is: 62,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.46 : 112,178.48 = 45,479.36 : x
  2. Step 2: Convert to fraction form
    81,289.46/112,178.48 = 45,479.36/x
  3. Step 3: Cross multiply
    81,289.46x = 112,178.48 × 45,479.36
  4. Step 4: Simplify right side
    81,289.46x = 5,101,805,476.17
  5. Step 5: Solve for x
    x = 5,101,805,476.17/81,289.46
  6. Step 6: Final answer
    x = 62,760.97

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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.