Home / 47,149.36-70,721.91-13,870.51

Finding the Fourth Proportional to 47,149.36, 70,721.91 and 13,870.51

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Solution

The fourth proportional to 47,149.36, 70,721.91 and 13,870.51 is: 20,805.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,149.36 : 70,721.91 = 13,870.51 : x
  2. Step 2: Convert to fraction form
    47,149.36/70,721.91 = 13,870.51/x
  3. Step 3: Cross multiply
    47,149.36x = 70,721.91 × 13,870.51
  4. Step 4: Simplify right side
    47,149.36x = 980,948,783.07
  5. Step 5: Solve for x
    x = 980,948,783.07/47,149.36
  6. Step 6: Final answer
    x = 20,805.14

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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.