Home / 77,053.17-115,603.38-69,105.45

Finding the Fourth Proportional to 77,053.17, 115,603.38 and 69,105.45

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Solution

The fourth proportional to 77,053.17, 115,603.38 and 69,105.45 is: 103,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,053.17 : 115,603.38 = 69,105.45 : x
  2. Step 2: Convert to fraction form
    77,053.17/115,603.38 = 69,105.45/x
  3. Step 3: Cross multiply
    77,053.17x = 115,603.38 × 69,105.45
  4. Step 4: Simplify right side
    77,053.17x = 7,988,823,596.42
  5. Step 5: Solve for x
    x = 7,988,823,596.42/77,053.17
  6. Step 6: Final answer
    x = 103,679.36

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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.