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Finding the Fourth Proportional to 40,959.51, 61,442.03 and 13,930.84

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Solution

The fourth proportional to 40,959.51, 61,442.03 and 13,930.84 is: 20,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,959.51 : 61,442.03 = 13,930.84 : x
  2. Step 2: Convert to fraction form
    40,959.51/61,442.03 = 13,930.84/x
  3. Step 3: Cross multiply
    40,959.51x = 61,442.03 × 13,930.84
  4. Step 4: Simplify right side
    40,959.51x = 855,939,089.21
  5. Step 5: Solve for x
    x = 855,939,089.21/40,959.51
  6. Step 6: Final answer
    x = 20,897.20

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1.5x scale

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.