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Finding the Fourth Proportional to 64,130.57, 96,208.60 and 19,755.42

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Solution

The fourth proportional to 64,130.57, 96,208.60 and 19,755.42 is: 29,637.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,130.57 : 96,208.60 = 19,755.42 : x
  2. Step 2: Convert to fraction form
    64,130.57/96,208.60 = 19,755.42/x
  3. Step 3: Cross multiply
    64,130.57x = 96,208.60 × 19,755.42
  4. Step 4: Simplify right side
    64,130.57x = 1,900,641,300.61
  5. Step 5: Solve for x
    x = 1,900,641,300.61/64,130.57
  6. Step 6: Final answer
    x = 29,637.06

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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.