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Finding the Fourth Proportional to 73,099.65, 100,878.35 and 42,885.49

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Solution

The fourth proportional to 73,099.65, 100,878.35 and 42,885.49 is: 59,182.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,099.65 : 100,878.35 = 42,885.49 : x
  2. Step 2: Convert to fraction form
    73,099.65/100,878.35 = 42,885.49/x
  3. Step 3: Cross multiply
    73,099.65x = 100,878.35 × 42,885.49
  4. Step 4: Simplify right side
    73,099.65x = 4,326,217,470.14
  5. Step 5: Solve for x
    x = 4,326,217,470.14/73,099.65
  6. Step 6: Final answer
    x = 59,182.46

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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.