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Finding the Fourth Proportional to 93,158.70, 128,562.30 and 50,720.28

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Solution

The fourth proportional to 93,158.70, 128,562.30 and 50,720.28 is: 69,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,158.70 : 128,562.30 = 50,720.28 : x
  2. Step 2: Convert to fraction form
    93,158.70/128,562.30 = 50,720.28/x
  3. Step 3: Cross multiply
    93,158.70x = 128,562.30 × 50,720.28
  4. Step 4: Simplify right side
    93,158.70x = 6,520,715,853.44
  5. Step 5: Solve for x
    x = 6,520,715,853.44/93,158.70
  6. Step 6: Final answer
    x = 69,995.78

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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.