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Finding the Fourth Proportional to 86,406.75, 129,661.16 and 36,483.62

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Solution

The fourth proportional to 86,406.75, 129,661.16 and 36,483.62 is: 54,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,406.75 : 129,661.16 = 36,483.62 : x
  2. Step 2: Convert to fraction form
    86,406.75/129,661.16 = 36,483.62/x
  3. Step 3: Cross multiply
    86,406.75x = 129,661.16 × 36,483.62
  4. Step 4: Simplify right side
    86,406.75x = 4,730,507,659.48
  5. Step 5: Solve for x
    x = 4,730,507,659.48/86,406.75
  6. Step 6: Final answer
    x = 54,746.97

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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.