Home / 83,478.05-115,199.49-45,238.66

Finding the Fourth Proportional to 83,478.05, 115,199.49 and 45,238.66

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Solution

The fourth proportional to 83,478.05, 115,199.49 and 45,238.66 is: 62,429.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,478.05 : 115,199.49 = 45,238.66 : x
  2. Step 2: Convert to fraction form
    83,478.05/115,199.49 = 45,238.66/x
  3. Step 3: Cross multiply
    83,478.05x = 115,199.49 × 45,238.66
  4. Step 4: Simplify right side
    83,478.05x = 5,211,470,560.28
  5. Step 5: Solve for x
    x = 5,211,470,560.28/83,478.05
  6. Step 6: Final answer
    x = 62,429.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.