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Finding the Fourth Proportional to 77,110.80, 108,042.60 and 77,110.80

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Solution

The fourth proportional to 77,110.80, 108,042.60 and 77,110.80 is: 108,042.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,110.80 : 108,042.60 = 77,110.80 : x
  2. Step 2: Convert to fraction form
    77,110.80/108,042.60 = 77,110.80/x
  3. Step 3: Cross multiply
    77,110.80x = 108,042.60 × 77,110.80
  4. Step 4: Simplify right side
    77,110.80x = 8,331,251,320.08
  5. Step 5: Solve for x
    x = 8,331,251,320.08/77,110.80
  6. Step 6: Final answer
    x = 108,042.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.