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Finding the Fourth Proportional to 73,099.40, 100,878.01 and 42,885.25

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Solution

The fourth proportional to 73,099.40, 100,878.01 and 42,885.25 is: 59,182.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,099.40 : 100,878.01 = 42,885.25 : x
  2. Step 2: Convert to fraction form
    73,099.40/100,878.01 = 42,885.25/x
  3. Step 3: Cross multiply
    73,099.40x = 100,878.01 × 42,885.25
  4. Step 4: Simplify right side
    73,099.40x = 4,326,178,318.94
  5. Step 5: Solve for x
    x = 4,326,178,318.94/73,099.40
  6. Step 6: Final answer
    x = 59,182.14

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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.