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Finding the Fourth Proportional to 109,621, 151,277.12 and 59,320

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Solution

The fourth proportional to 109,621, 151,277.12 and 59,320 is: 81,861.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,621 : 151,277.12 = 59,320 : x
  2. Step 2: Convert to fraction form
    109,621/151,277.12 = 59,320/x
  3. Step 3: Cross multiply
    109,621x = 151,277.12 × 59,320
  4. Step 4: Simplify right side
    109,621x = 8,973,758,758.40
  5. Step 5: Solve for x
    x = 8,973,758,758.40/109,621
  6. Step 6: Final answer
    x = 81,861.68

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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.