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Finding the Fourth Proportional to 86,999.76, 130,500.41 and 34,409.25

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Solution

The fourth proportional to 86,999.76, 130,500.41 and 34,409.25 is: 51,614.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.76 : 130,500.41 = 34,409.25 : x
  2. Step 2: Convert to fraction form
    86,999.76/130,500.41 = 34,409.25/x
  3. Step 3: Cross multiply
    86,999.76x = 130,500.41 × 34,409.25
  4. Step 4: Simplify right side
    86,999.76x = 4,490,421,060.75
  5. Step 5: Solve for x
    x = 4,490,421,060.75/86,999.76
  6. Step 6: Final answer
    x = 51,614.18

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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.