Home / 77,257.76-115,886.64-42,178.28

Finding the Fourth Proportional to 77,257.76, 115,886.64 and 42,178.28

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Solution

The fourth proportional to 77,257.76, 115,886.64 and 42,178.28 is: 63,267.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,257.76 : 115,886.64 = 42,178.28 : x
  2. Step 2: Convert to fraction form
    77,257.76/115,886.64 = 42,178.28/x
  3. Step 3: Cross multiply
    77,257.76x = 115,886.64 × 42,178.28
  4. Step 4: Simplify right side
    77,257.76x = 4,887,899,150.18
  5. Step 5: Solve for x
    x = 4,887,899,150.18/77,257.76
  6. Step 6: Final answer
    x = 63,267.42

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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.