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Finding the Fourth Proportional to 93,161.70, 128,558.91 and 50,720.14

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Solution

The fourth proportional to 93,161.70, 128,558.91 and 50,720.14 is: 69,991.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,161.70 : 128,558.91 = 50,720.14 : x
  2. Step 2: Convert to fraction form
    93,161.70/128,558.91 = 50,720.14/x
  3. Step 3: Cross multiply
    93,161.70x = 128,558.91 × 50,720.14
  4. Step 4: Simplify right side
    93,161.70x = 6,520,525,913.45
  5. Step 5: Solve for x
    x = 6,520,525,913.45/93,161.70
  6. Step 6: Final answer
    x = 69,991.49

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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.