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Finding the Fourth Proportional to 93,138.75, 139,740.93 and 40,541.40

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Solution

The fourth proportional to 93,138.75, 139,740.93 and 40,541.40 is: 60,826.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.75 : 139,740.93 = 40,541.40 : x
  2. Step 2: Convert to fraction form
    93,138.75/139,740.93 = 40,541.40/x
  3. Step 3: Cross multiply
    93,138.75x = 139,740.93 × 40,541.40
  4. Step 4: Simplify right side
    93,138.75x = 5,665,292,939.50
  5. Step 5: Solve for x
    x = 5,665,292,939.50/93,138.75
  6. Step 6: Final answer
    x = 60,826.38

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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.