Home / 81,005.52-111,705.84-54,148.08

Finding the Fourth Proportional to 81,005.52, 111,705.84 and 54,148.08

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Solution

The fourth proportional to 81,005.52, 111,705.84 and 54,148.08 is: 74,669.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005.52 : 111,705.84 = 54,148.08 : x
  2. Step 2: Convert to fraction form
    81,005.52/111,705.84 = 54,148.08/x
  3. Step 3: Cross multiply
    81,005.52x = 111,705.84 × 54,148.08
  4. Step 4: Simplify right side
    81,005.52x = 6,048,656,760.79
  5. Step 5: Solve for x
    x = 6,048,656,760.79/81,005.52
  6. Step 6: Final answer
    x = 74,669.69

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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.