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Finding the Fourth Proportional to 48,008.40, 72,012.60 and 12,948.06

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Solution

The fourth proportional to 48,008.40, 72,012.60 and 12,948.06 is: 19,422.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,008.40 : 72,012.60 = 12,948.06 : x
  2. Step 2: Convert to fraction form
    48,008.40/72,012.60 = 12,948.06/x
  3. Step 3: Cross multiply
    48,008.40x = 72,012.60 × 12,948.06
  4. Step 4: Simplify right side
    48,008.40x = 932,423,465.56
  5. Step 5: Solve for x
    x = 932,423,465.56/48,008.40
  6. Step 6: Final answer
    x = 19,422.09

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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.