Home / 88,390.80-121,977-48,105.36

Finding the Fourth Proportional to 88,390.80, 121,977 and 48,105.36

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Solution

The fourth proportional to 88,390.80, 121,977 and 48,105.36 is: 66,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,390.80 : 121,977 = 48,105.36 : x
  2. Step 2: Convert to fraction form
    88,390.80/121,977 = 48,105.36/x
  3. Step 3: Cross multiply
    88,390.80x = 121,977 × 48,105.36
  4. Step 4: Simplify right side
    88,390.80x = 5,867,747,496.72
  5. Step 5: Solve for x
    x = 5,867,747,496.72/88,390.80
  6. Step 6: Final answer
    x = 66,384.14

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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.