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Finding the Fourth Proportional to 80,364.76, 119,948.81 and 69,643.24

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Solution

The fourth proportional to 80,364.76, 119,948.81 and 69,643.24 is: 103,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,364.76 : 119,948.81 = 69,643.24 : x
  2. Step 2: Convert to fraction form
    80,364.76/119,948.81 = 69,643.24/x
  3. Step 3: Cross multiply
    80,364.76x = 119,948.81 × 69,643.24
  4. Step 4: Simplify right side
    80,364.76x = 8,353,623,762.54
  5. Step 5: Solve for x
    x = 8,353,623,762.54/80,364.76
  6. Step 6: Final answer
    x = 103,946.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.