Home / 42,663.78-63,968.24-17,721.02

Finding the Fourth Proportional to 42,663.78, 63,968.24 and 17,721.02

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Solution

The fourth proportional to 42,663.78, 63,968.24 and 17,721.02 is: 26,570.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,663.78 : 63,968.24 = 17,721.02 : x
  2. Step 2: Convert to fraction form
    42,663.78/63,968.24 = 17,721.02/x
  3. Step 3: Cross multiply
    42,663.78x = 63,968.24 × 17,721.02
  4. Step 4: Simplify right side
    42,663.78x = 1,133,582,460.40
  5. Step 5: Solve for x
    x = 1,133,582,460.40/42,663.78
  6. Step 6: Final answer
    x = 26,570.14

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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.