Home / 77,112.42-115,386.95-45,537.41

Finding the Fourth Proportional to 77,112.42, 115,386.95 and 45,537.41

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Solution

The fourth proportional to 77,112.42, 115,386.95 and 45,537.41 is: 68,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,112.42 : 115,386.95 = 45,537.41 : x
  2. Step 2: Convert to fraction form
    77,112.42/115,386.95 = 45,537.41/x
  3. Step 3: Cross multiply
    77,112.42x = 115,386.95 × 45,537.41
  4. Step 4: Simplify right side
    77,112.42x = 5,254,422,046.18
  5. Step 5: Solve for x
    x = 5,254,422,046.18/77,112.42
  6. Step 6: Final answer
    x = 68,139.76

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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.