Home / 81,206.72-112,067.58-45,400.76

Finding the Fourth Proportional to 81,206.72, 112,067.58 and 45,400.76

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Solution

The fourth proportional to 81,206.72, 112,067.58 and 45,400.76 is: 62,654.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,206.72 : 112,067.58 = 45,400.76 : x
  2. Step 2: Convert to fraction form
    81,206.72/112,067.58 = 45,400.76/x
  3. Step 3: Cross multiply
    81,206.72x = 112,067.58 × 45,400.76
  4. Step 4: Simplify right side
    81,206.72x = 5,087,953,303.36
  5. Step 5: Solve for x
    x = 5,087,953,303.36/81,206.72
  6. Step 6: Final answer
    x = 62,654.34

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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.