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Finding the Fourth Proportional to 101,679.15, 152,428.50 and 38,455.05

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Solution

The fourth proportional to 101,679.15, 152,428.50 and 38,455.05 is: 57,648.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,679.15 : 152,428.50 = 38,455.05 : x
  2. Step 2: Convert to fraction form
    101,679.15/152,428.50 = 38,455.05/x
  3. Step 3: Cross multiply
    101,679.15x = 152,428.50 × 38,455.05
  4. Step 4: Simplify right side
    101,679.15x = 5,861,645,588.93
  5. Step 5: Solve for x
    x = 5,861,645,588.93/101,679.15
  6. Step 6: Final answer
    x = 57,648.45

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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.