Home / 76,546.85-105,686.20-68,455.40

Finding the Fourth Proportional to 76,546.85, 105,686.20 and 68,455.40

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Solution

The fourth proportional to 76,546.85, 105,686.20 and 68,455.40 is: 94,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,546.85 : 105,686.20 = 68,455.40 : x
  2. Step 2: Convert to fraction form
    76,546.85/105,686.20 = 68,455.40/x
  3. Step 3: Cross multiply
    76,546.85x = 105,686.20 × 68,455.40
  4. Step 4: Simplify right side
    76,546.85x = 7,234,791,095.48
  5. Step 5: Solve for x
    x = 7,234,791,095.48/76,546.85
  6. Step 6: Final answer
    x = 94,514.55

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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.