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Finding the Fourth Proportional to 65,780.22, 90,775.35 and 35,972.22

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Solution

The fourth proportional to 65,780.22, 90,775.35 and 35,972.22 is: 49,640.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,780.22 : 90,775.35 = 35,972.22 : x
  2. Step 2: Convert to fraction form
    65,780.22/90,775.35 = 35,972.22/x
  3. Step 3: Cross multiply
    65,780.22x = 90,775.35 × 35,972.22
  4. Step 4: Simplify right side
    65,780.22x = 3,265,390,860.78
  5. Step 5: Solve for x
    x = 3,265,390,860.78/65,780.22
  6. Step 6: Final answer
    x = 49,640.92

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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.