Home / 40,386.66-55,616-31,419.06

Finding the Fourth Proportional to 40,386.66, 55,616 and 31,419.06

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Solution

The fourth proportional to 40,386.66, 55,616 and 31,419.06 is: 43,266.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,386.66 : 55,616 = 31,419.06 : x
  2. Step 2: Convert to fraction form
    40,386.66/55,616 = 31,419.06/x
  3. Step 3: Cross multiply
    40,386.66x = 55,616 × 31,419.06
  4. Step 4: Simplify right side
    40,386.66x = 1,747,402,440.96
  5. Step 5: Solve for x
    x = 1,747,402,440.96/40,386.66
  6. Step 6: Final answer
    x = 43,266.82

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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.