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Finding the Fourth Proportional to 77,894.59, 107,508.54 and 74,344.82

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Solution

The fourth proportional to 77,894.59, 107,508.54 and 74,344.82 is: 102,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,894.59 : 107,508.54 = 74,344.82 : x
  2. Step 2: Convert to fraction form
    77,894.59/107,508.54 = 74,344.82/x
  3. Step 3: Cross multiply
    77,894.59x = 107,508.54 × 74,344.82
  4. Step 4: Simplify right side
    77,894.59x = 7,992,703,054.76
  5. Step 5: Solve for x
    x = 7,992,703,054.76/77,894.59
  6. Step 6: Final answer
    x = 102,609.22

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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.