Home / 77,965.20-107,592.08-42,155.52

Finding the Fourth Proportional to 77,965.20, 107,592.08 and 42,155.52

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Solution

The fourth proportional to 77,965.20, 107,592.08 and 42,155.52 is: 58,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,965.20 : 107,592.08 = 42,155.52 : x
  2. Step 2: Convert to fraction form
    77,965.20/107,592.08 = 42,155.52/x
  3. Step 3: Cross multiply
    77,965.20x = 107,592.08 × 42,155.52
  4. Step 4: Simplify right side
    77,965.20x = 4,535,600,080.28
  5. Step 5: Solve for x
    x = 4,535,600,080.28/77,965.20
  6. Step 6: Final answer
    x = 58,174.67

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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.