Home / 60,556.78-90,802.23-21,103.30

Finding the Fourth Proportional to 60,556.78, 90,802.23 and 21,103.30

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Solution

The fourth proportional to 60,556.78, 90,802.23 and 21,103.30 is: 31,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,556.78 : 90,802.23 = 21,103.30 : x
  2. Step 2: Convert to fraction form
    60,556.78/90,802.23 = 21,103.30/x
  3. Step 3: Cross multiply
    60,556.78x = 90,802.23 × 21,103.30
  4. Step 4: Simplify right side
    60,556.78x = 1,916,226,700.36
  5. Step 5: Solve for x
    x = 1,916,226,700.36/60,556.78
  6. Step 6: Final answer
    x = 31,643.47

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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.