Home / 90,053.18-135,047.37-30,872.96

Finding the Fourth Proportional to 90,053.18, 135,047.37 and 30,872.96

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Solution

The fourth proportional to 90,053.18, 135,047.37 and 30,872.96 is: 46,298.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,053.18 : 135,047.37 = 30,872.96 : x
  2. Step 2: Convert to fraction form
    90,053.18/135,047.37 = 30,872.96/x
  3. Step 3: Cross multiply
    90,053.18x = 135,047.37 × 30,872.96
  4. Step 4: Simplify right side
    90,053.18x = 4,169,312,052.12
  5. Step 5: Solve for x
    x = 4,169,312,052.12/90,053.18
  6. Step 6: Final answer
    x = 46,298.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.