Home / 51,455.94-77,139.54-19,888.15

Finding the Fourth Proportional to 51,455.94, 77,139.54 and 19,888.15

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Solution

The fourth proportional to 51,455.94, 77,139.54 and 19,888.15 is: 29,815.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,455.94 : 77,139.54 = 19,888.15 : x
  2. Step 2: Convert to fraction form
    51,455.94/77,139.54 = 19,888.15/x
  3. Step 3: Cross multiply
    51,455.94x = 77,139.54 × 19,888.15
  4. Step 4: Simplify right side
    51,455.94x = 1,534,162,742.45
  5. Step 5: Solve for x
    x = 1,534,162,742.45/51,455.94
  6. Step 6: Final answer
    x = 29,815.08

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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.