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Finding the Fourth Proportional to 86,700.92, 130,054.06 and 23,520.80

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Solution

The fourth proportional to 86,700.92, 130,054.06 and 23,520.80 is: 35,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,700.92 : 130,054.06 = 23,520.80 : x
  2. Step 2: Convert to fraction form
    86,700.92/130,054.06 = 23,520.80/x
  3. Step 3: Cross multiply
    86,700.92x = 130,054.06 × 23,520.80
  4. Step 4: Simplify right side
    86,700.92x = 3,058,975,025.13
  5. Step 5: Solve for x
    x = 3,058,975,025.13/86,700.92
  6. Step 6: Final answer
    x = 35,281.92

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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.