Home / 76,678.12-115,184.84-54,633.16

Finding the Fourth Proportional to 76,678.12, 115,184.84 and 54,633.16

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Solution

The fourth proportional to 76,678.12, 115,184.84 and 54,633.16 is: 82,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678.12 : 115,184.84 = 54,633.16 : x
  2. Step 2: Convert to fraction form
    76,678.12/115,184.84 = 54,633.16/x
  3. Step 3: Cross multiply
    76,678.12x = 115,184.84 × 54,633.16
  4. Step 4: Simplify right side
    76,678.12x = 6,292,911,793.29
  5. Step 5: Solve for x
    x = 6,292,911,793.29/76,678.12
  6. Step 6: Final answer
    x = 82,069.20

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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.