Home / 40,688.40-61,090.20-31,933.20

Finding the Fourth Proportional to 40,688.40, 61,090.20 and 31,933.20

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Solution

The fourth proportional to 40,688.40, 61,090.20 and 31,933.20 is: 47,945.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,688.40 : 61,090.20 = 31,933.20 : x
  2. Step 2: Convert to fraction form
    40,688.40/61,090.20 = 31,933.20/x
  3. Step 3: Cross multiply
    40,688.40x = 61,090.20 × 31,933.20
  4. Step 4: Simplify right side
    40,688.40x = 1,950,805,574.64
  5. Step 5: Solve for x
    x = 1,950,805,574.64/40,688.40
  6. Step 6: Final answer
    x = 47,945.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.