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Finding the Fourth Proportional to 79,261.53, 109,381.79 and 45,274.52

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Solution

The fourth proportional to 79,261.53, 109,381.79 and 45,274.52 is: 62,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,261.53 : 109,381.79 = 45,274.52 : x
  2. Step 2: Convert to fraction form
    79,261.53/109,381.79 = 45,274.52/x
  3. Step 3: Cross multiply
    79,261.53x = 109,381.79 × 45,274.52
  4. Step 4: Simplify right side
    79,261.53x = 4,952,208,038.99
  5. Step 5: Solve for x
    x = 4,952,208,038.99/79,261.53
  6. Step 6: Final answer
    x = 62,479.34

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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.