Home / 77,675.28-107,148.60-53,815.92

Finding the Fourth Proportional to 77,675.28, 107,148.60 and 53,815.92

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Solution

The fourth proportional to 77,675.28, 107,148.60 and 53,815.92 is: 74,235.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,675.28 : 107,148.60 = 53,815.92 : x
  2. Step 2: Convert to fraction form
    77,675.28/107,148.60 = 53,815.92/x
  3. Step 3: Cross multiply
    77,675.28x = 107,148.60 × 53,815.92
  4. Step 4: Simplify right side
    77,675.28x = 5,766,300,485.71
  5. Step 5: Solve for x
    x = 5,766,300,485.71/77,675.28
  6. Step 6: Final answer
    x = 74,235.98

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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.