Home / 77,999.18-117,259.79-61,557.39

Finding the Fourth Proportional to 77,999.18, 117,259.79 and 61,557.39

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Solution

The fourth proportional to 77,999.18, 117,259.79 and 61,557.39 is: 92,542.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,999.18 : 117,259.79 = 61,557.39 : x
  2. Step 2: Convert to fraction form
    77,999.18/117,259.79 = 61,557.39/x
  3. Step 3: Cross multiply
    77,999.18x = 117,259.79 × 61,557.39
  4. Step 4: Simplify right side
    77,999.18x = 7,218,206,316.56
  5. Step 5: Solve for x
    x = 7,218,206,316.56/77,999.18
  6. Step 6: Final answer
    x = 92,542.09

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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.