Home / 40,189.05-55,396.95-31,677.36

Finding the Fourth Proportional to 40,189.05, 55,396.95 and 31,677.36

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Solution

The fourth proportional to 40,189.05, 55,396.95 and 31,677.36 is: 43,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,189.05 : 55,396.95 = 31,677.36 : x
  2. Step 2: Convert to fraction form
    40,189.05/55,396.95 = 31,677.36/x
  3. Step 3: Cross multiply
    40,189.05x = 55,396.95 × 31,677.36
  4. Step 4: Simplify right side
    40,189.05x = 1,754,829,128.05
  5. Step 5: Solve for x
    x = 1,754,829,128.05/40,189.05
  6. Step 6: Final answer
    x = 43,664.36

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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.