Home / 81,412.50-112,387.73-54,572.55

Finding the Fourth Proportional to 81,412.50, 112,387.73 and 54,572.55

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Solution

The fourth proportional to 81,412.50, 112,387.73 and 54,572.55 is: 75,335.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.50 : 112,387.73 = 54,572.55 : x
  2. Step 2: Convert to fraction form
    81,412.50/112,387.73 = 54,572.55/x
  3. Step 3: Cross multiply
    81,412.50x = 112,387.73 × 54,572.55
  4. Step 4: Simplify right side
    81,412.50x = 6,133,285,014.81
  5. Step 5: Solve for x
    x = 6,133,285,014.81/81,412.50
  6. Step 6: Final answer
    x = 75,335.91

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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.