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Finding the Fourth Proportional to 65,486.84, 90,300.29 and 44,229.20

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Solution

The fourth proportional to 65,486.84, 90,300.29 and 44,229.20 is: 60,987.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,486.84 : 90,300.29 = 44,229.20 : x
  2. Step 2: Convert to fraction form
    65,486.84/90,300.29 = 44,229.20/x
  3. Step 3: Cross multiply
    65,486.84x = 90,300.29 × 44,229.20
  4. Step 4: Simplify right side
    65,486.84x = 3,993,908,913.82
  5. Step 5: Solve for x
    x = 3,993,908,913.82/65,486.84
  6. Step 6: Final answer
    x = 60,987.97

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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.