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Finding the Fourth Proportional to 101,478.40, 152,243.52 and 39,132.16

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Solution

The fourth proportional to 101,478.40, 152,243.52 and 39,132.16 is: 58,708.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,478.40 : 152,243.52 = 39,132.16 : x
  2. Step 2: Convert to fraction form
    101,478.40/152,243.52 = 39,132.16/x
  3. Step 3: Cross multiply
    101,478.40x = 152,243.52 × 39,132.16
  4. Step 4: Simplify right side
    101,478.40x = 5,957,617,783.60
  5. Step 5: Solve for x
    x = 5,957,617,783.60/101,478.40
  6. Step 6: Final answer
    x = 58,708.24

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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.