Home / 86,463.09-129,708.05-36,543.40

Finding the Fourth Proportional to 86,463.09, 129,708.05 and 36,543.40

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Solution

The fourth proportional to 86,463.09, 129,708.05 and 36,543.40 is: 54,820.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,463.09 : 129,708.05 = 36,543.40 : x
  2. Step 2: Convert to fraction form
    86,463.09/129,708.05 = 36,543.40/x
  3. Step 3: Cross multiply
    86,463.09x = 129,708.05 × 36,543.40
  4. Step 4: Simplify right side
    86,463.09x = 4,739,973,154.37
  5. Step 5: Solve for x
    x = 4,739,973,154.37/86,463.09
  6. Step 6: Final answer
    x = 54,820.77

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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.