Home / 89,985.36-124,178.40-49,699.20

Finding the Fourth Proportional to 89,985.36, 124,178.40 and 49,699.20

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Solution

The fourth proportional to 89,985.36, 124,178.40 and 49,699.20 is: 68,584.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,985.36 : 124,178.40 = 49,699.20 : x
  2. Step 2: Convert to fraction form
    89,985.36/124,178.40 = 49,699.20/x
  3. Step 3: Cross multiply
    89,985.36x = 124,178.40 × 49,699.20
  4. Step 4: Simplify right side
    89,985.36x = 6,171,567,137.28
  5. Step 5: Solve for x
    x = 6,171,567,137.28/89,985.36
  6. Step 6: Final answer
    x = 68,584.12

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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.