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Finding the Fourth Proportional to 72,914.80, 100,629.52 and 42,698.24

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Solution

The fourth proportional to 72,914.80, 100,629.52 and 42,698.24 is: 58,927.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,914.80 : 100,629.52 = 42,698.24 : x
  2. Step 2: Convert to fraction form
    72,914.80/100,629.52 = 42,698.24/x
  3. Step 3: Cross multiply
    72,914.80x = 100,629.52 × 42,698.24
  4. Step 4: Simplify right side
    72,914.80x = 4,296,703,396.04
  5. Step 5: Solve for x
    x = 4,296,703,396.04/72,914.80
  6. Step 6: Final answer
    x = 58,927.73

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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.