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Finding the Fourth Proportional to 93,681.60, 140,230.80 and 54,121.20

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Solution

The fourth proportional to 93,681.60, 140,230.80 and 54,121.20 is: 81,013.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,681.60 : 140,230.80 = 54,121.20 : x
  2. Step 2: Convert to fraction form
    93,681.60/140,230.80 = 54,121.20/x
  3. Step 3: Cross multiply
    93,681.60x = 140,230.80 × 54,121.20
  4. Step 4: Simplify right side
    93,681.60x = 7,589,459,172.96
  5. Step 5: Solve for x
    x = 7,589,459,172.96/93,681.60
  6. Step 6: Final answer
    x = 81,013.34

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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.