Home / 72,971.16-100,700.40-41,140.12

Finding the Fourth Proportional to 72,971.16, 100,700.40 and 41,140.12

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Solution

The fourth proportional to 72,971.16, 100,700.40 and 41,140.12 is: 56,773.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,971.16 : 100,700.40 = 41,140.12 : x
  2. Step 2: Convert to fraction form
    72,971.16/100,700.40 = 41,140.12/x
  3. Step 3: Cross multiply
    72,971.16x = 100,700.40 × 41,140.12
  4. Step 4: Simplify right side
    72,971.16x = 4,142,826,540.05
  5. Step 5: Solve for x
    x = 4,142,826,540.05/72,971.16
  6. Step 6: Final answer
    x = 56,773.48

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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.