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Finding the Fourth Proportional to 79,477.37, 109,726.94 and 52,642.88

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Solution

The fourth proportional to 79,477.37, 109,726.94 and 52,642.88 is: 72,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,477.37 : 109,726.94 = 52,642.88 : x
  2. Step 2: Convert to fraction form
    79,477.37/109,726.94 = 52,642.88/x
  3. Step 3: Cross multiply
    79,477.37x = 109,726.94 × 52,642.88
  4. Step 4: Simplify right side
    79,477.37x = 5,776,342,135.19
  5. Step 5: Solve for x
    x = 5,776,342,135.19/79,477.37
  6. Step 6: Final answer
    x = 72,679.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.