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Finding the Fourth Proportional to 48,012.80, 72,019.26 and 12,952.49

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Solution

The fourth proportional to 48,012.80, 72,019.26 and 12,952.49 is: 19,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,012.80 : 72,019.26 = 12,952.49 : x
  2. Step 2: Convert to fraction form
    48,012.80/72,019.26 = 12,952.49/x
  3. Step 3: Cross multiply
    48,012.80x = 72,019.26 × 12,952.49
  4. Step 4: Simplify right side
    48,012.80x = 932,828,744.96
  5. Step 5: Solve for x
    x = 932,828,744.96/48,012.80
  6. Step 6: Final answer
    x = 19,428.75

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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.