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Finding the Fourth Proportional to 86,520.81, 129,798.51 and 36,600.69

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Solution

The fourth proportional to 86,520.81, 129,798.51 and 36,600.69 is: 54,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,520.81 : 129,798.51 = 36,600.69 : x
  2. Step 2: Convert to fraction form
    86,520.81/129,798.51 = 36,600.69/x
  3. Step 3: Cross multiply
    86,520.81x = 129,798.51 × 36,600.69
  4. Step 4: Simplify right side
    86,520.81x = 4,750,715,026.97
  5. Step 5: Solve for x
    x = 4,750,715,026.97/86,520.81
  6. Step 6: Final answer
    x = 54,908.35

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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.