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Finding the Fourth Proportional to 77,874.77, 116,812.16 and 21,712.61

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Solution

The fourth proportional to 77,874.77, 116,812.16 and 21,712.61 is: 32,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,874.77 : 116,812.16 = 21,712.61 : x
  2. Step 2: Convert to fraction form
    77,874.77/116,812.16 = 21,712.61/x
  3. Step 3: Cross multiply
    77,874.77x = 116,812.16 × 21,712.61
  4. Step 4: Simplify right side
    77,874.77x = 2,536,296,180.71
  5. Step 5: Solve for x
    x = 2,536,296,180.71/77,874.77
  6. Step 6: Final answer
    x = 32,568.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.