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Finding the Fourth Proportional to 73,115.16, 100,899.60 and 42,900.96

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Solution

The fourth proportional to 73,115.16, 100,899.60 and 42,900.96 is: 59,203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,115.16 : 100,899.60 = 42,900.96 : x
  2. Step 2: Convert to fraction form
    73,115.16/100,899.60 = 42,900.96/x
  3. Step 3: Cross multiply
    73,115.16x = 100,899.60 × 42,900.96
  4. Step 4: Simplify right side
    73,115.16x = 4,328,689,703.62
  5. Step 5: Solve for x
    x = 4,328,689,703.62/73,115.16
  6. Step 6: Final answer
    x = 59,203.72

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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.