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Finding the Fourth Proportional to 65,447.48, 90,307.68 and 36,761.64

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Solution

The fourth proportional to 65,447.48, 90,307.68 and 36,761.64 is: 50,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,447.48 : 90,307.68 = 36,761.64 : x
  2. Step 2: Convert to fraction form
    65,447.48/90,307.68 = 36,761.64/x
  3. Step 3: Cross multiply
    65,447.48x = 90,307.68 × 36,761.64
  4. Step 4: Simplify right side
    65,447.48x = 3,319,858,421.40
  5. Step 5: Solve for x
    x = 3,319,858,421.40/65,447.48
  6. Step 6: Final answer
    x = 50,725.53

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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.