Home / 53,139.23-79,722.56-19,859.55

Finding the Fourth Proportional to 53,139.23, 79,722.56 and 19,859.55

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Solution

The fourth proportional to 53,139.23, 79,722.56 and 19,859.55 is: 29,794.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.23 : 79,722.56 = 19,859.55 : x
  2. Step 2: Convert to fraction form
    53,139.23/79,722.56 = 19,859.55/x
  3. Step 3: Cross multiply
    53,139.23x = 79,722.56 × 19,859.55
  4. Step 4: Simplify right side
    53,139.23x = 1,583,254,166.45
  5. Step 5: Solve for x
    x = 1,583,254,166.45/53,139.23
  6. Step 6: Final answer
    x = 29,794.45

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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.