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Finding the Fourth Proportional to 83,987.50, 125,980.48 and 34,055.73

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Solution

The fourth proportional to 83,987.50, 125,980.48 and 34,055.73 is: 51,083.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,987.50 : 125,980.48 = 34,055.73 : x
  2. Step 2: Convert to fraction form
    83,987.50/125,980.48 = 34,055.73/x
  3. Step 3: Cross multiply
    83,987.50x = 125,980.48 × 34,055.73
  4. Step 4: Simplify right side
    83,987.50x = 4,290,357,212.15
  5. Step 5: Solve for x
    x = 4,290,357,212.15/83,987.50
  6. Step 6: Final answer
    x = 51,083.28

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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.