Home / 81,319.83-112,226.31-45,509.10

Finding the Fourth Proportional to 81,319.83, 112,226.31 and 45,509.10

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Solution

The fourth proportional to 81,319.83, 112,226.31 and 45,509.10 is: 62,805.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,319.83 : 112,226.31 = 45,509.10 : x
  2. Step 2: Convert to fraction form
    81,319.83/112,226.31 = 45,509.10/x
  3. Step 3: Cross multiply
    81,319.83x = 112,226.31 × 45,509.10
  4. Step 4: Simplify right side
    81,319.83x = 5,107,318,364.42
  5. Step 5: Solve for x
    x = 5,107,318,364.42/81,319.83
  6. Step 6: Final answer
    x = 62,805.33

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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.