Home / 89,241.12-123,143.62-53,430.20

Finding the Fourth Proportional to 89,241.12, 123,143.62 and 53,430.20

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Solution

The fourth proportional to 89,241.12, 123,143.62 and 53,430.20 is: 73,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,241.12 : 123,143.62 = 53,430.20 : x
  2. Step 2: Convert to fraction form
    89,241.12/123,143.62 = 53,430.20/x
  3. Step 3: Cross multiply
    89,241.12x = 123,143.62 × 53,430.20
  4. Step 4: Simplify right side
    89,241.12x = 6,579,588,245.32
  5. Step 5: Solve for x
    x = 6,579,588,245.32/89,241.12
  6. Step 6: Final answer
    x = 73,728.21

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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.