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Finding the Fourth Proportional to 64,982.56, 89,655.62 and 38,126.20

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Solution

The fourth proportional to 64,982.56, 89,655.62 and 38,126.20 is: 52,602.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,982.56 : 89,655.62 = 38,126.20 : x
  2. Step 2: Convert to fraction form
    64,982.56/89,655.62 = 38,126.20/x
  3. Step 3: Cross multiply
    64,982.56x = 89,655.62 × 38,126.20
  4. Step 4: Simplify right side
    64,982.56x = 3,418,228,099.24
  5. Step 5: Solve for x
    x = 3,418,228,099.24/64,982.56
  6. Step 6: Final answer
    x = 52,602.24

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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.