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Finding the Fourth Proportional to 93,320.80, 139,981.20 and 43,384.30

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Solution

The fourth proportional to 93,320.80, 139,981.20 and 43,384.30 is: 65,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,320.80 : 139,981.20 = 43,384.30 : x
  2. Step 2: Convert to fraction form
    93,320.80/139,981.20 = 43,384.30/x
  3. Step 3: Cross multiply
    93,320.80x = 139,981.20 × 43,384.30
  4. Step 4: Simplify right side
    93,320.80x = 6,072,986,375.16
  5. Step 5: Solve for x
    x = 6,072,986,375.16/93,320.80
  6. Step 6: Final answer
    x = 65,076.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.