Home / 40,142.79-55,400.18-22,239.45

Finding the Fourth Proportional to 40,142.79, 55,400.18 and 22,239.45

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Solution

The fourth proportional to 40,142.79, 55,400.18 and 22,239.45 is: 30,692.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,142.79 : 55,400.18 = 22,239.45 : x
  2. Step 2: Convert to fraction form
    40,142.79/55,400.18 = 22,239.45/x
  3. Step 3: Cross multiply
    40,142.79x = 55,400.18 × 22,239.45
  4. Step 4: Simplify right side
    40,142.79x = 1,232,069,421.90
  5. Step 5: Solve for x
    x = 1,232,069,421.90/40,142.79
  6. Step 6: Final answer
    x = 30,692.17

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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.