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Finding the Fourth Proportional to 86,005.54, 128,957.21 and 32,701.42

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Solution

The fourth proportional to 86,005.54, 128,957.21 and 32,701.42 is: 49,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,005.54 : 128,957.21 = 32,701.42 : x
  2. Step 2: Convert to fraction form
    86,005.54/128,957.21 = 32,701.42/x
  3. Step 3: Cross multiply
    86,005.54x = 128,957.21 × 32,701.42
  4. Step 4: Simplify right side
    86,005.54x = 4,217,084,006.56
  5. Step 5: Solve for x
    x = 4,217,084,006.56/86,005.54
  6. Step 6: Final answer
    x = 49,032.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.