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Finding the Fourth Proportional to 76,235.43, 104,970.05 and 67,722.79

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Solution

The fourth proportional to 76,235.43, 104,970.05 and 67,722.79 is: 93,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,235.43 : 104,970.05 = 67,722.79 : x
  2. Step 2: Convert to fraction form
    76,235.43/104,970.05 = 67,722.79/x
  3. Step 3: Cross multiply
    76,235.43x = 104,970.05 × 67,722.79
  4. Step 4: Simplify right side
    76,235.43x = 7,108,864,552.18
  5. Step 5: Solve for x
    x = 7,108,864,552.18/76,235.43
  6. Step 6: Final answer
    x = 93,248.83

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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.