Home / 71,815.92-99,083.52-39,979.32

Finding the Fourth Proportional to 71,815.92, 99,083.52 and 39,979.32

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Solution

The fourth proportional to 71,815.92, 99,083.52 and 39,979.32 is: 55,158.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,815.92 : 99,083.52 = 39,979.32 : x
  2. Step 2: Convert to fraction form
    71,815.92/99,083.52 = 39,979.32/x
  3. Step 3: Cross multiply
    71,815.92x = 99,083.52 × 39,979.32
  4. Step 4: Simplify right side
    71,815.92x = 3,961,291,752.81
  5. Step 5: Solve for x
    x = 3,961,291,752.81/71,815.92
  6. Step 6: Final answer
    x = 55,158.96

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1.5x scale

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.