Home / 79,557.12-119,162.88-77,345.28

Finding the Fourth Proportional to 79,557.12, 119,162.88 and 77,345.28

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Solution

The fourth proportional to 79,557.12, 119,162.88 and 77,345.28 is: 115,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,557.12 : 119,162.88 = 77,345.28 : x
  2. Step 2: Convert to fraction form
    79,557.12/119,162.88 = 77,345.28/x
  3. Step 3: Cross multiply
    79,557.12x = 119,162.88 × 77,345.28
  4. Step 4: Simplify right side
    79,557.12x = 9,216,686,319.21
  5. Step 5: Solve for x
    x = 9,216,686,319.21/79,557.12
  6. Step 6: Final answer
    x = 115,849.92

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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.