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Finding the Fourth Proportional to 93,125.80, 139,688.70 and 36,979.30

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Solution

The fourth proportional to 93,125.80, 139,688.70 and 36,979.30 is: 55,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,125.80 : 139,688.70 = 36,979.30 : x
  2. Step 2: Convert to fraction form
    93,125.80/139,688.70 = 36,979.30/x
  3. Step 3: Cross multiply
    93,125.80x = 139,688.70 × 36,979.30
  4. Step 4: Simplify right side
    93,125.80x = 5,165,590,343.91
  5. Step 5: Solve for x
    x = 5,165,590,343.91/93,125.80
  6. Step 6: Final answer
    x = 55,468.95

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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.