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Finding the Fourth Proportional to 65,221.44, 89,984 and 45,071.08

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Solution

The fourth proportional to 65,221.44, 89,984 and 45,071.08 is: 62,183.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,221.44 : 89,984 = 45,071.08 : x
  2. Step 2: Convert to fraction form
    65,221.44/89,984 = 45,071.08/x
  3. Step 3: Cross multiply
    65,221.44x = 89,984 × 45,071.08
  4. Step 4: Simplify right side
    65,221.44x = 4,055,676,062.72
  5. Step 5: Solve for x
    x = 4,055,676,062.72/65,221.44
  6. Step 6: Final answer
    x = 62,183.17

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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.