Home / 75,631.20-113,446.80-70,710.45

Finding the Fourth Proportional to 75,631.20, 113,446.80 and 70,710.45

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Solution

The fourth proportional to 75,631.20, 113,446.80 and 70,710.45 is: 106,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,631.20 : 113,446.80 = 70,710.45 : x
  2. Step 2: Convert to fraction form
    75,631.20/113,446.80 = 70,710.45/x
  3. Step 3: Cross multiply
    75,631.20x = 113,446.80 × 70,710.45
  4. Step 4: Simplify right side
    75,631.20x = 8,021,874,279.06
  5. Step 5: Solve for x
    x = 8,021,874,279.06/75,631.20
  6. Step 6: Final answer
    x = 106,065.68

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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.