Home / 83,439.63-125,159.49-20,259.81

Finding the Fourth Proportional to 83,439.63, 125,159.49 and 20,259.81

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Solution

The fourth proportional to 83,439.63, 125,159.49 and 20,259.81 is: 30,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,439.63 : 125,159.49 = 20,259.81 : x
  2. Step 2: Convert to fraction form
    83,439.63/125,159.49 = 20,259.81/x
  3. Step 3: Cross multiply
    83,439.63x = 125,159.49 × 20,259.81
  4. Step 4: Simplify right side
    83,439.63x = 2,535,707,487.10
  5. Step 5: Solve for x
    x = 2,535,707,487.10/83,439.63
  6. Step 6: Final answer
    x = 30,389.73

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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.