Home / 42,071.40-63,138.38-19,891.58

Finding the Fourth Proportional to 42,071.40, 63,138.38 and 19,891.58

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Solution

The fourth proportional to 42,071.40, 63,138.38 and 19,891.58 is: 29,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,071.40 : 63,138.38 = 19,891.58 : x
  2. Step 2: Convert to fraction form
    42,071.40/63,138.38 = 19,891.58/x
  3. Step 3: Cross multiply
    42,071.40x = 63,138.38 × 19,891.58
  4. Step 4: Simplify right side
    42,071.40x = 1,255,921,721.69
  5. Step 5: Solve for x
    x = 1,255,921,721.69/42,071.40
  6. Step 6: Final answer
    x = 29,852.15

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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.