Home / 76,769.12-105,938.61-42,775.85

Finding the Fourth Proportional to 76,769.12, 105,938.61 and 42,775.85

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Solution

The fourth proportional to 76,769.12, 105,938.61 and 42,775.85 is: 59,029.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,769.12 : 105,938.61 = 42,775.85 : x
  2. Step 2: Convert to fraction form
    76,769.12/105,938.61 = 42,775.85/x
  3. Step 3: Cross multiply
    76,769.12x = 105,938.61 × 42,775.85
  4. Step 4: Simplify right side
    76,769.12x = 4,531,614,195.01
  5. Step 5: Solve for x
    x = 4,531,614,195.01/76,769.12
  6. Step 6: Final answer
    x = 59,029.13

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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.