Home / 42,122.64-63,222.84-21,360.72

Finding the Fourth Proportional to 42,122.64, 63,222.84 and 21,360.72

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Solution

The fourth proportional to 42,122.64, 63,222.84 and 21,360.72 is: 32,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,122.64 : 63,222.84 = 21,360.72 : x
  2. Step 2: Convert to fraction form
    42,122.64/63,222.84 = 21,360.72/x
  3. Step 3: Cross multiply
    42,122.64x = 63,222.84 × 21,360.72
  4. Step 4: Simplify right side
    42,122.64x = 1,350,485,382.84
  5. Step 5: Solve for x
    x = 1,350,485,382.84/42,122.64
  6. Step 6: Final answer
    x = 32,060.80

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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.