Home / 55,915.20-77,164.18-30,764.70

Finding the Fourth Proportional to 55,915.20, 77,164.18 and 30,764.70

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Solution

The fourth proportional to 55,915.20, 77,164.18 and 30,764.70 is: 42,455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,915.20 : 77,164.18 = 30,764.70 : x
  2. Step 2: Convert to fraction form
    55,915.20/77,164.18 = 30,764.70/x
  3. Step 3: Cross multiply
    55,915.20x = 77,164.18 × 30,764.70
  4. Step 4: Simplify right side
    55,915.20x = 2,373,932,771.53
  5. Step 5: Solve for x
    x = 2,373,932,771.53/55,915.20
  6. Step 6: Final answer
    x = 42,455.95

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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.