Home / 39,970.78-59,992.62-17,780.02

Finding the Fourth Proportional to 39,970.78, 59,992.62 and 17,780.02

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Solution

The fourth proportional to 39,970.78, 59,992.62 and 17,780.02 is: 26,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,970.78 : 59,992.62 = 17,780.02 : x
  2. Step 2: Convert to fraction form
    39,970.78/59,992.62 = 17,780.02/x
  3. Step 3: Cross multiply
    39,970.78x = 59,992.62 × 17,780.02
  4. Step 4: Simplify right side
    39,970.78x = 1,066,669,983.45
  5. Step 5: Solve for x
    x = 1,066,669,983.45/39,970.78
  6. Step 6: Final answer
    x = 26,686.24

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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.