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Finding the Fourth Proportional to 93,135.55, 139,737.12 and 57,555.40

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Solution

The fourth proportional to 93,135.55, 139,737.12 and 57,555.40 is: 86,353.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,135.55 : 139,737.12 = 57,555.40 : x
  2. Step 2: Convert to fraction form
    93,135.55/139,737.12 = 57,555.40/x
  3. Step 3: Cross multiply
    93,135.55x = 139,737.12 × 57,555.40
  4. Step 4: Simplify right side
    93,135.55x = 8,042,625,836.45
  5. Step 5: Solve for x
    x = 8,042,625,836.45/93,135.55
  6. Step 6: Final answer
    x = 86,353.98

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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.