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Finding the Fourth Proportional to 93,381.50, 128,866.48 and 50,940.20

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Solution

The fourth proportional to 93,381.50, 128,866.48 and 50,940.20 is: 70,297.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,381.50 : 128,866.48 = 50,940.20 : x
  2. Step 2: Convert to fraction form
    93,381.50/128,866.48 = 50,940.20/x
  3. Step 3: Cross multiply
    93,381.50x = 128,866.48 × 50,940.20
  4. Step 4: Simplify right side
    93,381.50x = 6,564,484,264.50
  5. Step 5: Solve for x
    x = 6,564,484,264.50/93,381.50
  6. Step 6: Final answer
    x = 70,297.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.