Home / 45,320.31-67,647.60-39,999.78

Finding the Fourth Proportional to 45,320.31, 67,647.60 and 39,999.78

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Solution

The fourth proportional to 45,320.31, 67,647.60 and 39,999.78 is: 59,705.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320.31 : 67,647.60 = 39,999.78 : x
  2. Step 2: Convert to fraction form
    45,320.31/67,647.60 = 39,999.78/x
  3. Step 3: Cross multiply
    45,320.31x = 67,647.60 × 39,999.78
  4. Step 4: Simplify right side
    45,320.31x = 2,705,889,117.53
  5. Step 5: Solve for x
    x = 2,705,889,117.53/45,320.31
  6. Step 6: Final answer
    x = 59,705.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.