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Finding the Fourth Proportional to 65,019.84, 89,726.28 and 36,340.20

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Solution

The fourth proportional to 65,019.84, 89,726.28 and 36,340.20 is: 50,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,019.84 : 89,726.28 = 36,340.20 : x
  2. Step 2: Convert to fraction form
    65,019.84/89,726.28 = 36,340.20/x
  3. Step 3: Cross multiply
    65,019.84x = 89,726.28 × 36,340.20
  4. Step 4: Simplify right side
    65,019.84x = 3,260,670,960.46
  5. Step 5: Solve for x
    x = 3,260,670,960.46/65,019.84
  6. Step 6: Final answer
    x = 50,148.86

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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.