Home / 83,211.12-124,824.60-30,621.60

Finding the Fourth Proportional to 83,211.12, 124,824.60 and 30,621.60

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Solution

The fourth proportional to 83,211.12, 124,824.60 and 30,621.60 is: 45,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,211.12 : 124,824.60 = 30,621.60 : x
  2. Step 2: Convert to fraction form
    83,211.12/124,824.60 = 30,621.60/x
  3. Step 3: Cross multiply
    83,211.12x = 124,824.60 × 30,621.60
  4. Step 4: Simplify right side
    83,211.12x = 3,822,328,971.36
  5. Step 5: Solve for x
    x = 3,822,328,971.36/83,211.12
  6. Step 6: Final answer
    x = 45,935.31

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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.