Home / 72,041.43-99,418.20-40,210.33

Finding the Fourth Proportional to 72,041.43, 99,418.20 and 40,210.33

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Solution

The fourth proportional to 72,041.43, 99,418.20 and 40,210.33 is: 55,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,041.43 : 99,418.20 = 40,210.33 : x
  2. Step 2: Convert to fraction form
    72,041.43/99,418.20 = 40,210.33/x
  3. Step 3: Cross multiply
    72,041.43x = 99,418.20 × 40,210.33
  4. Step 4: Simplify right side
    72,041.43x = 3,997,638,630.01
  5. Step 5: Solve for x
    x = 3,997,638,630.01/72,041.43
  6. Step 6: Final answer
    x = 55,490.83

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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.