Home / 45,117.63-67,690.28-20,178.65

Finding the Fourth Proportional to 45,117.63, 67,690.28 and 20,178.65

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Solution

The fourth proportional to 45,117.63, 67,690.28 and 20,178.65 is: 30,274.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117.63 : 67,690.28 = 20,178.65 : x
  2. Step 2: Convert to fraction form
    45,117.63/67,690.28 = 20,178.65/x
  3. Step 3: Cross multiply
    45,117.63x = 67,690.28 × 20,178.65
  4. Step 4: Simplify right side
    45,117.63x = 1,365,898,468.52
  5. Step 5: Solve for x
    x = 1,365,898,468.52/45,117.63
  6. Step 6: Final answer
    x = 30,274.17

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1.5x scale

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.