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Finding the Fourth Proportional to 77,699.84, 107,215.68 and 43,707.17

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Solution

The fourth proportional to 77,699.84, 107,215.68 and 43,707.17 is: 60,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,699.84 : 107,215.68 = 43,707.17 : x
  2. Step 2: Convert to fraction form
    77,699.84/107,215.68 = 43,707.17/x
  3. Step 3: Cross multiply
    77,699.84x = 107,215.68 × 43,707.17
  4. Step 4: Simplify right side
    77,699.84x = 4,686,094,329.73
  5. Step 5: Solve for x
    x = 4,686,094,329.73/77,699.84
  6. Step 6: Final answer
    x = 60,310.22

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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.