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Finding the Fourth Proportional to 73,140.65, 100,933.52 and 39,606.65

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Solution

The fourth proportional to 73,140.65, 100,933.52 and 39,606.65 is: 54,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,140.65 : 100,933.52 = 39,606.65 : x
  2. Step 2: Convert to fraction form
    73,140.65/100,933.52 = 39,606.65/x
  3. Step 3: Cross multiply
    73,140.65x = 100,933.52 × 39,606.65
  4. Step 4: Simplify right side
    73,140.65x = 3,997,638,599.91
  5. Step 5: Solve for x
    x = 3,997,638,599.91/73,140.65
  6. Step 6: Final answer
    x = 54,656.86

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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.