Home / 76,286.90-105,282.14-42,306.03

Finding the Fourth Proportional to 76,286.90, 105,282.14 and 42,306.03

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Solution

The fourth proportional to 76,286.90, 105,282.14 and 42,306.03 is: 58,385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,286.90 : 105,282.14 = 42,306.03 : x
  2. Step 2: Convert to fraction form
    76,286.90/105,282.14 = 42,306.03/x
  3. Step 3: Cross multiply
    76,286.90x = 105,282.14 × 42,306.03
  4. Step 4: Simplify right side
    76,286.90x = 4,454,069,161.77
  5. Step 5: Solve for x
    x = 4,454,069,161.77/76,286.90
  6. Step 6: Final answer
    x = 58,385.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.