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Finding the Fourth Proportional to 52,726.80, 79,064.60 and 29,328.40

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Solution

The fourth proportional to 52,726.80, 79,064.60 and 29,328.40 is: 43,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,726.80 : 79,064.60 = 29,328.40 : x
  2. Step 2: Convert to fraction form
    52,726.80/79,064.60 = 29,328.40/x
  3. Step 3: Cross multiply
    52,726.80x = 79,064.60 × 29,328.40
  4. Step 4: Simplify right side
    52,726.80x = 2,318,838,214.64
  5. Step 5: Solve for x
    x = 2,318,838,214.64/52,726.80
  6. Step 6: Final answer
    x = 43,978.36

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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.