Home / 40,411.09-55,748.01-31,396.90

Finding the Fourth Proportional to 40,411.09, 55,748.01 and 31,396.90

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Solution

The fourth proportional to 40,411.09, 55,748.01 and 31,396.90 is: 43,312.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,411.09 : 55,748.01 = 31,396.90 : x
  2. Step 2: Convert to fraction form
    40,411.09/55,748.01 = 31,396.90/x
  3. Step 3: Cross multiply
    40,411.09x = 55,748.01 × 31,396.90
  4. Step 4: Simplify right side
    40,411.09x = 1,750,314,695.17
  5. Step 5: Solve for x
    x = 1,750,314,695.17/40,411.09
  6. Step 6: Final answer
    x = 43,312.73

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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.