Home / 42,271.90-63,408.48-20,087.56

Finding the Fourth Proportional to 42,271.90, 63,408.48 and 20,087.56

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Solution

The fourth proportional to 42,271.90, 63,408.48 and 20,087.56 is: 30,131.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,271.90 : 63,408.48 = 20,087.56 : x
  2. Step 2: Convert to fraction form
    42,271.90/63,408.48 = 20,087.56/x
  3. Step 3: Cross multiply
    42,271.90x = 63,408.48 × 20,087.56
  4. Step 4: Simplify right side
    42,271.90x = 1,273,721,646.51
  5. Step 5: Solve for x
    x = 1,273,721,646.51/42,271.90
  6. Step 6: Final answer
    x = 30,131.64

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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.