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Finding the Fourth Proportional to 65,616.60, 98,424.90 and 30,559.80

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Solution

The fourth proportional to 65,616.60, 98,424.90 and 30,559.80 is: 45,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,616.60 : 98,424.90 = 30,559.80 : x
  2. Step 2: Convert to fraction form
    65,616.60/98,424.90 = 30,559.80/x
  3. Step 3: Cross multiply
    65,616.60x = 98,424.90 × 30,559.80
  4. Step 4: Simplify right side
    65,616.60x = 3,007,845,259.02
  5. Step 5: Solve for x
    x = 3,007,845,259.02/65,616.60
  6. Step 6: Final answer
    x = 45,839.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.