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Finding the Fourth Proportional to 65,244.39, 90,050.01 and 38,409.90

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Solution

The fourth proportional to 65,244.39, 90,050.01 and 38,409.90 is: 53,013.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,244.39 : 90,050.01 = 38,409.90 : x
  2. Step 2: Convert to fraction form
    65,244.39/90,050.01 = 38,409.90/x
  3. Step 3: Cross multiply
    65,244.39x = 90,050.01 × 38,409.90
  4. Step 4: Simplify right side
    65,244.39x = 3,458,811,879.10
  5. Step 5: Solve for x
    x = 3,458,811,879.10/65,244.39
  6. Step 6: Final answer
    x = 53,013.17

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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.