Home / 86,685.15-130,028.13-36,752.70

Finding the Fourth Proportional to 86,685.15, 130,028.13 and 36,752.70

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Solution

The fourth proportional to 86,685.15, 130,028.13 and 36,752.70 is: 55,129.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,685.15 : 130,028.13 = 36,752.70 : x
  2. Step 2: Convert to fraction form
    86,685.15/130,028.13 = 36,752.70/x
  3. Step 3: Cross multiply
    86,685.15x = 130,028.13 × 36,752.70
  4. Step 4: Simplify right side
    86,685.15x = 4,778,884,853.45
  5. Step 5: Solve for x
    x = 4,778,884,853.45/86,685.15
  6. Step 6: Final answer
    x = 55,129.22

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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.