Home / 72,487.09-100,026.88-40,223.17

Finding the Fourth Proportional to 72,487.09, 100,026.88 and 40,223.17

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Solution

The fourth proportional to 72,487.09, 100,026.88 and 40,223.17 is: 55,505.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,487.09 : 100,026.88 = 40,223.17 : x
  2. Step 2: Convert to fraction form
    72,487.09/100,026.88 = 40,223.17/x
  3. Step 3: Cross multiply
    72,487.09x = 100,026.88 × 40,223.17
  4. Step 4: Simplify right side
    72,487.09x = 4,023,398,198.81
  5. Step 5: Solve for x
    x = 4,023,398,198.81/72,487.09
  6. Step 6: Final answer
    x = 55,505.03

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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.