Home / 99,579.28-137,417.67-54,257.63

Finding the Fourth Proportional to 99,579.28, 137,417.67 and 54,257.63

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Solution

The fourth proportional to 99,579.28, 137,417.67 and 54,257.63 is: 74,874.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,579.28 : 137,417.67 = 54,257.63 : x
  2. Step 2: Convert to fraction form
    99,579.28/137,417.67 = 54,257.63/x
  3. Step 3: Cross multiply
    99,579.28x = 137,417.67 × 54,257.63
  4. Step 4: Simplify right side
    99,579.28x = 7,455,957,094.32
  5. Step 5: Solve for x
    x = 7,455,957,094.32/99,579.28
  6. Step 6: Final answer
    x = 74,874.59

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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.