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Finding the Fourth Proportional to 65,627.29, 90,534.90 and 38,751.49

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Solution

The fourth proportional to 65,627.29, 90,534.90 and 38,751.49 is: 53,458.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,627.29 : 90,534.90 = 38,751.49 : x
  2. Step 2: Convert to fraction form
    65,627.29/90,534.90 = 38,751.49/x
  3. Step 3: Cross multiply
    65,627.29x = 90,534.90 × 38,751.49
  4. Step 4: Simplify right side
    65,627.29x = 3,508,362,272.00
  5. Step 5: Solve for x
    x = 3,508,362,272.00/65,627.29
  6. Step 6: Final answer
    x = 53,458.89

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1.5x scale

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.