Home / 86,411.69-129,446.46-40,756.87

Finding the Fourth Proportional to 86,411.69, 129,446.46 and 40,756.87

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Solution

The fourth proportional to 86,411.69, 129,446.46 and 40,756.87 is: 61,054.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,411.69 : 129,446.46 = 40,756.87 : x
  2. Step 2: Convert to fraction form
    86,411.69/129,446.46 = 40,756.87/x
  3. Step 3: Cross multiply
    86,411.69x = 129,446.46 × 40,756.87
  4. Step 4: Simplify right side
    86,411.69x = 5,275,832,542.18
  5. Step 5: Solve for x
    x = 5,275,832,542.18/86,411.69
  6. Step 6: Final answer
    x = 61,054.62

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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.