Home / 53,931.72-80,934.02-18,871.68

Finding the Fourth Proportional to 53,931.72, 80,934.02 and 18,871.68

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Solution

The fourth proportional to 53,931.72, 80,934.02 and 18,871.68 is: 28,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,931.72 : 80,934.02 = 18,871.68 : x
  2. Step 2: Convert to fraction form
    53,931.72/80,934.02 = 18,871.68/x
  3. Step 3: Cross multiply
    53,931.72x = 80,934.02 × 18,871.68
  4. Step 4: Simplify right side
    53,931.72x = 1,527,360,926.55
  5. Step 5: Solve for x
    x = 1,527,360,926.55/53,931.72
  6. Step 6: Final answer
    x = 28,320.27

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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.