Home / 42,005.18-62,985.88-19,812.58

Finding the Fourth Proportional to 42,005.18, 62,985.88 and 19,812.58

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Solution

The fourth proportional to 42,005.18, 62,985.88 and 19,812.58 is: 29,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,005.18 : 62,985.88 = 19,812.58 : x
  2. Step 2: Convert to fraction form
    42,005.18/62,985.88 = 19,812.58/x
  3. Step 3: Cross multiply
    42,005.18x = 62,985.88 × 19,812.58
  4. Step 4: Simplify right side
    42,005.18x = 1,247,912,786.37
  5. Step 5: Solve for x
    x = 1,247,912,786.37/42,005.18
  6. Step 6: Final answer
    x = 29,708.55

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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.