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Finding the Fourth Proportional to 79,102.73, 109,130.54 and 48,835.53

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Solution

The fourth proportional to 79,102.73, 109,130.54 and 48,835.53 is: 67,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,102.73 : 109,130.54 = 48,835.53 : x
  2. Step 2: Convert to fraction form
    79,102.73/109,130.54 = 48,835.53/x
  3. Step 3: Cross multiply
    79,102.73x = 109,130.54 × 48,835.53
  4. Step 4: Simplify right side
    79,102.73x = 5,329,447,515.91
  5. Step 5: Solve for x
    x = 5,329,447,515.91/79,102.73
  6. Step 6: Final answer
    x = 67,373.75

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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.