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Finding the Fourth Proportional to 64,718.88, 89,291.21 and 36,419.10

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Solution

The fourth proportional to 64,718.88, 89,291.21 and 36,419.10 is: 50,246.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,718.88 : 89,291.21 = 36,419.10 : x
  2. Step 2: Convert to fraction form
    64,718.88/89,291.21 = 36,419.10/x
  3. Step 3: Cross multiply
    64,718.88x = 89,291.21 × 36,419.10
  4. Step 4: Simplify right side
    64,718.88x = 3,251,905,324.02
  5. Step 5: Solve for x
    x = 3,251,905,324.02/64,718.88
  6. Step 6: Final answer
    x = 50,246.63

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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.