Home / 99,579.12-137,417.58-54,257.70

Finding the Fourth Proportional to 99,579.12, 137,417.58 and 54,257.70

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Solution

The fourth proportional to 99,579.12, 137,417.58 and 54,257.70 is: 74,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,579.12 : 137,417.58 = 54,257.70 : x
  2. Step 2: Convert to fraction form
    99,579.12/137,417.58 = 54,257.70/x
  3. Step 3: Cross multiply
    99,579.12x = 137,417.58 × 54,257.70
  4. Step 4: Simplify right side
    99,579.12x = 7,455,961,830.37
  5. Step 5: Solve for x
    x = 7,455,961,830.37/99,579.12
  6. Step 6: Final answer
    x = 74,874.75

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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.