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Finding the Fourth Proportional to 64,858.80, 97,291.10 and 19,876.90

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Solution

The fourth proportional to 64,858.80, 97,291.10 and 19,876.90 is: 29,816.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,858.80 : 97,291.10 = 19,876.90 : x
  2. Step 2: Convert to fraction form
    64,858.80/97,291.10 = 19,876.90/x
  3. Step 3: Cross multiply
    64,858.80x = 97,291.10 × 19,876.90
  4. Step 4: Simplify right side
    64,858.80x = 1,933,845,197.52
  5. Step 5: Solve for x
    x = 1,933,845,197.52/64,858.80
  6. Step 6: Final answer
    x = 29,816.24

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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.