Home / 53,931.40-80,933.55-18,871.36

Finding the Fourth Proportional to 53,931.40, 80,933.55 and 18,871.36

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Solution

The fourth proportional to 53,931.40, 80,933.55 and 18,871.36 is: 28,319.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,931.40 : 80,933.55 = 18,871.36 : x
  2. Step 2: Convert to fraction form
    53,931.40/80,933.55 = 18,871.36/x
  3. Step 3: Cross multiply
    53,931.40x = 80,933.55 × 18,871.36
  4. Step 4: Simplify right side
    53,931.40x = 1,527,325,885.03
  5. Step 5: Solve for x
    x = 1,527,325,885.03/53,931.40
  6. Step 6: Final answer
    x = 28,319.79

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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.