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Finding the Fourth Proportional to 74,347.40, 111,510.30 and 21,751.40

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Solution

The fourth proportional to 74,347.40, 111,510.30 and 21,751.40 is: 32,623.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,347.40 : 111,510.30 = 21,751.40 : x
  2. Step 2: Convert to fraction form
    74,347.40/111,510.30 = 21,751.40/x
  3. Step 3: Cross multiply
    74,347.40x = 111,510.30 × 21,751.40
  4. Step 4: Simplify right side
    74,347.40x = 2,425,505,139.42
  5. Step 5: Solve for x
    x = 2,425,505,139.42/74,347.40
  6. Step 6: Final answer
    x = 32,623.94

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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.