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Finding the Fourth Proportional to 65,290.60, 90,100.10 and 36,610.12

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Solution

The fourth proportional to 65,290.60, 90,100.10 and 36,610.12 is: 50,521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,290.60 : 90,100.10 = 36,610.12 : x
  2. Step 2: Convert to fraction form
    65,290.60/90,100.10 = 36,610.12/x
  3. Step 3: Cross multiply
    65,290.60x = 90,100.10 × 36,610.12
  4. Step 4: Simplify right side
    65,290.60x = 3,298,575,473.01
  5. Step 5: Solve for x
    x = 3,298,575,473.01/65,290.60
  6. Step 6: Final answer
    x = 50,521.45

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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.