Home / 85,425.31-128,096.07-49,895.56

Finding the Fourth Proportional to 85,425.31, 128,096.07 and 49,895.56

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Solution

The fourth proportional to 85,425.31, 128,096.07 and 49,895.56 is: 74,818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,425.31 : 128,096.07 = 49,895.56 : x
  2. Step 2: Convert to fraction form
    85,425.31/128,096.07 = 49,895.56/x
  3. Step 3: Cross multiply
    85,425.31x = 128,096.07 × 49,895.56
  4. Step 4: Simplify right side
    85,425.31x = 6,391,425,146.45
  5. Step 5: Solve for x
    x = 6,391,425,146.45/85,425.31
  6. Step 6: Final answer
    x = 74,818.87

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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.