Home / 42,065.39-63,129.36-19,885.56

Finding the Fourth Proportional to 42,065.39, 63,129.36 and 19,885.56

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Solution

The fourth proportional to 42,065.39, 63,129.36 and 19,885.56 is: 29,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,065.39 : 63,129.36 = 19,885.56 : x
  2. Step 2: Convert to fraction form
    42,065.39/63,129.36 = 19,885.56/x
  3. Step 3: Cross multiply
    42,065.39x = 63,129.36 × 19,885.56
  4. Step 4: Simplify right side
    42,065.39x = 1,255,362,676.04
  5. Step 5: Solve for x
    x = 1,255,362,676.04/42,065.39
  6. Step 6: Final answer
    x = 29,843.13

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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.