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Finding the Fourth Proportional to 65,306.60, 90,120.12 and 37,011.68

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Solution

The fourth proportional to 65,306.60, 90,120.12 and 37,011.68 is: 51,074.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,306.60 : 90,120.12 = 37,011.68 : x
  2. Step 2: Convert to fraction form
    65,306.60/90,120.12 = 37,011.68/x
  3. Step 3: Cross multiply
    65,306.60x = 90,120.12 × 37,011.68
  4. Step 4: Simplify right side
    65,306.60x = 3,335,497,043.00
  5. Step 5: Solve for x
    x = 3,335,497,043.00/65,306.60
  6. Step 6: Final answer
    x = 51,074.42

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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.