Home / 81,416.40-122,120.28-26,008.08

Finding the Fourth Proportional to 81,416.40, 122,120.28 and 26,008.08

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Solution

The fourth proportional to 81,416.40, 122,120.28 and 26,008.08 is: 39,010.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,416.40 : 122,120.28 = 26,008.08 : x
  2. Step 2: Convert to fraction form
    81,416.40/122,120.28 = 26,008.08/x
  3. Step 3: Cross multiply
    81,416.40x = 122,120.28 × 26,008.08
  4. Step 4: Simplify right side
    81,416.40x = 3,176,114,011.86
  5. Step 5: Solve for x
    x = 3,176,114,011.86/81,416.40
  6. Step 6: Final answer
    x = 39,010.74

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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.