Home / 53,130.78-79,716.42-19,865.70

Finding the Fourth Proportional to 53,130.78, 79,716.42 and 19,865.70

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Solution

The fourth proportional to 53,130.78, 79,716.42 and 19,865.70 is: 29,806.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,130.78 : 79,716.42 = 19,865.70 : x
  2. Step 2: Convert to fraction form
    53,130.78/79,716.42 = 19,865.70/x
  3. Step 3: Cross multiply
    53,130.78x = 79,716.42 × 19,865.70
  4. Step 4: Simplify right side
    53,130.78x = 1,583,622,484.79
  5. Step 5: Solve for x
    x = 1,583,622,484.79/53,130.78
  6. Step 6: Final answer
    x = 29,806.12

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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.