Home / 74,264.20-111,421.80-21,681.40

Finding the Fourth Proportional to 74,264.20, 111,421.80 and 21,681.40

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Solution

The fourth proportional to 74,264.20, 111,421.80 and 21,681.40 is: 32,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,264.20 : 111,421.80 = 21,681.40 : x
  2. Step 2: Convert to fraction form
    74,264.20/111,421.80 = 21,681.40/x
  3. Step 3: Cross multiply
    74,264.20x = 111,421.80 × 21,681.40
  4. Step 4: Simplify right side
    74,264.20x = 2,415,780,614.52
  5. Step 5: Solve for x
    x = 2,415,780,614.52/74,264.20
  6. Step 6: Final answer
    x = 32,529.54

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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.