Home / 89,138.48-123,012.08-48,851.39

Finding the Fourth Proportional to 89,138.48, 123,012.08 and 48,851.39

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Solution

The fourth proportional to 89,138.48, 123,012.08 and 48,851.39 is: 67,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,138.48 : 123,012.08 = 48,851.39 : x
  2. Step 2: Convert to fraction form
    89,138.48/123,012.08 = 48,851.39/x
  3. Step 3: Cross multiply
    89,138.48x = 123,012.08 × 48,851.39
  4. Step 4: Simplify right side
    89,138.48x = 6,009,310,235.47
  5. Step 5: Solve for x
    x = 6,009,310,235.47/89,138.48
  6. Step 6: Final answer
    x = 67,415.45

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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.