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Finding the Fourth Proportional to 101,775.87, 140,447.37 and 61,482.60

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Solution

The fourth proportional to 101,775.87, 140,447.37 and 61,482.60 is: 84,843.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,775.87 : 140,447.37 = 61,482.60 : x
  2. Step 2: Convert to fraction form
    101,775.87/140,447.37 = 61,482.60/x
  3. Step 3: Cross multiply
    101,775.87x = 140,447.37 × 61,482.60
  4. Step 4: Simplify right side
    101,775.87x = 8,635,069,470.76
  5. Step 5: Solve for x
    x = 8,635,069,470.76/101,775.87
  6. Step 6: Final answer
    x = 84,843.98

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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.