Home / 70,747.63-106,084.93-20,821.25

Finding the Fourth Proportional to 70,747.63, 106,084.93 and 20,821.25

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Solution

The fourth proportional to 70,747.63, 106,084.93 and 20,821.25 is: 31,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,747.63 : 106,084.93 = 20,821.25 : x
  2. Step 2: Convert to fraction form
    70,747.63/106,084.93 = 20,821.25/x
  3. Step 3: Cross multiply
    70,747.63x = 106,084.93 × 20,821.25
  4. Step 4: Simplify right side
    70,747.63x = 2,208,820,848.76
  5. Step 5: Solve for x
    x = 2,208,820,848.76/70,747.63
  6. Step 6: Final answer
    x = 31,221.13

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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.