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Finding the Fourth Proportional to 70,524.86, 105,719.84 and 26,139.70

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Solution

The fourth proportional to 70,524.86, 105,719.84 and 26,139.70 is: 39,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,524.86 : 105,719.84 = 26,139.70 : x
  2. Step 2: Convert to fraction form
    70,524.86/105,719.84 = 26,139.70/x
  3. Step 3: Cross multiply
    70,524.86x = 105,719.84 × 26,139.70
  4. Step 4: Simplify right side
    70,524.86x = 2,763,484,901.65
  5. Step 5: Solve for x
    x = 2,763,484,901.65/70,524.86
  6. Step 6: Final answer
    x = 39,184.55

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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.