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Finding the Fourth Proportional to 64,562.78, 96,862.62 and 20,190.26

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Solution

The fourth proportional to 64,562.78, 96,862.62 and 20,190.26 is: 30,291.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,562.78 : 96,862.62 = 20,190.26 : x
  2. Step 2: Convert to fraction form
    64,562.78/96,862.62 = 20,190.26/x
  3. Step 3: Cross multiply
    64,562.78x = 96,862.62 × 20,190.26
  4. Step 4: Simplify right side
    64,562.78x = 1,955,681,482.08
  5. Step 5: Solve for x
    x = 1,955,681,482.08/64,562.78
  6. Step 6: Final answer
    x = 30,291.16

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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.