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Finding the Fourth Proportional to 69,543, 96,021.94 and 42,722.28

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Solution

The fourth proportional to 69,543, 96,021.94 and 42,722.28 is: 58,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,543 : 96,021.94 = 42,722.28 : x
  2. Step 2: Convert to fraction form
    69,543/96,021.94 = 42,722.28/x
  3. Step 3: Cross multiply
    69,543x = 96,021.94 × 42,722.28
  4. Step 4: Simplify right side
    69,543x = 4,102,276,206.82
  5. Step 5: Solve for x
    x = 4,102,276,206.82/69,543
  6. Step 6: Final answer
    x = 58,989.06

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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.