Home / 81,288.34-112,180.48-45,478.62

Finding the Fourth Proportional to 81,288.34, 112,180.48 and 45,478.62

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Solution

The fourth proportional to 81,288.34, 112,180.48 and 45,478.62 is: 62,761.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,288.34 : 112,180.48 = 45,478.62 : x
  2. Step 2: Convert to fraction form
    81,288.34/112,180.48 = 45,478.62/x
  3. Step 3: Cross multiply
    81,288.34x = 112,180.48 × 45,478.62
  4. Step 4: Simplify right side
    81,288.34x = 5,101,813,421.34
  5. Step 5: Solve for x
    x = 5,101,813,421.34/81,288.34
  6. Step 6: Final answer
    x = 62,761.93

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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.