Home / 76,118.40-114,307.20-56,419.20

Finding the Fourth Proportional to 76,118.40, 114,307.20 and 56,419.20

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Solution

The fourth proportional to 76,118.40, 114,307.20 and 56,419.20 is: 84,724.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,118.40 : 114,307.20 = 56,419.20 : x
  2. Step 2: Convert to fraction form
    76,118.40/114,307.20 = 56,419.20/x
  3. Step 3: Cross multiply
    76,118.40x = 114,307.20 × 56,419.20
  4. Step 4: Simplify right side
    76,118.40x = 6,449,120,778.24
  5. Step 5: Solve for x
    x = 6,449,120,778.24/76,118.40
  6. Step 6: Final answer
    x = 84,724.86

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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.