Home / 81,590.50-122,403.30-25,429.42

Finding the Fourth Proportional to 81,590.50, 122,403.30 and 25,429.42

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Solution

The fourth proportional to 81,590.50, 122,403.30 and 25,429.42 is: 38,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,590.50 : 122,403.30 = 25,429.42 : x
  2. Step 2: Convert to fraction form
    81,590.50/122,403.30 = 25,429.42/x
  3. Step 3: Cross multiply
    81,590.50x = 122,403.30 × 25,429.42
  4. Step 4: Simplify right side
    81,590.50x = 3,112,644,925.09
  5. Step 5: Solve for x
    x = 3,112,644,925.09/81,590.50
  6. Step 6: Final answer
    x = 38,149.60

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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.