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Finding the Fourth Proportional to 93,124.80, 139,687.20 and 36,978.30

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Solution

The fourth proportional to 93,124.80, 139,687.20 and 36,978.30 is: 55,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,124.80 : 139,687.20 = 36,978.30 : x
  2. Step 2: Convert to fraction form
    93,124.80/139,687.20 = 36,978.30/x
  3. Step 3: Cross multiply
    93,124.80x = 139,687.20 × 36,978.30
  4. Step 4: Simplify right side
    93,124.80x = 5,165,395,187.76
  5. Step 5: Solve for x
    x = 5,165,395,187.76/93,124.80
  6. Step 6: Final answer
    x = 55,467.45

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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.