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Finding the Fourth Proportional to 65,614.55, 90,524.39 and 42,966.45

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Solution

The fourth proportional to 65,614.55, 90,524.39 and 42,966.45 is: 59,278.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,614.55 : 90,524.39 = 42,966.45 : x
  2. Step 2: Convert to fraction form
    65,614.55/90,524.39 = 42,966.45/x
  3. Step 3: Cross multiply
    65,614.55x = 90,524.39 × 42,966.45
  4. Step 4: Simplify right side
    65,614.55x = 3,889,511,461.88
  5. Step 5: Solve for x
    x = 3,889,511,461.88/65,614.55
  6. Step 6: Final answer
    x = 59,278.19

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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.