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Finding the Fourth Proportional to 65,275.39, 90,079.72 and 36,981.01

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Solution

The fourth proportional to 65,275.39, 90,079.72 and 36,981.01 is: 51,033.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,275.39 : 90,079.72 = 36,981.01 : x
  2. Step 2: Convert to fraction form
    65,275.39/90,079.72 = 36,981.01/x
  3. Step 3: Cross multiply
    65,275.39x = 90,079.72 × 36,981.01
  4. Step 4: Simplify right side
    65,275.39x = 3,331,239,026.12
  5. Step 5: Solve for x
    x = 3,331,239,026.12/65,275.39
  6. Step 6: Final answer
    x = 51,033.61

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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.