Home / 75,155.16-112,739.14-19,751

Finding the Fourth Proportional to 75,155.16, 112,739.14 and 19,751

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Solution

The fourth proportional to 75,155.16, 112,739.14 and 19,751 is: 29,628.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,155.16 : 112,739.14 = 19,751 : x
  2. Step 2: Convert to fraction form
    75,155.16/112,739.14 = 19,751/x
  3. Step 3: Cross multiply
    75,155.16x = 112,739.14 × 19,751
  4. Step 4: Simplify right side
    75,155.16x = 2,226,710,754.14
  5. Step 5: Solve for x
    x = 2,226,710,754.14/75,155.16
  6. Step 6: Final answer
    x = 29,628.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.