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Finding the Fourth Proportional to 86,725.92, 130,098.48 and 34,128.48

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Solution

The fourth proportional to 86,725.92, 130,098.48 and 34,128.48 is: 51,196.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,725.92 : 130,098.48 = 34,128.48 : x
  2. Step 2: Convert to fraction form
    86,725.92/130,098.48 = 34,128.48/x
  3. Step 3: Cross multiply
    86,725.92x = 130,098.48 × 34,128.48
  4. Step 4: Simplify right side
    86,725.92x = 4,440,063,372.71
  5. Step 5: Solve for x
    x = 4,440,063,372.71/86,725.92
  6. Step 6: Final answer
    x = 51,196.50

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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.