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Finding the Fourth Proportional to 48,138.40, 72,194.80 and 14,858.40

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Solution

The fourth proportional to 48,138.40, 72,194.80 and 14,858.40 is: 22,283.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,138.40 : 72,194.80 = 14,858.40 : x
  2. Step 2: Convert to fraction form
    48,138.40/72,194.80 = 14,858.40/x
  3. Step 3: Cross multiply
    48,138.40x = 72,194.80 × 14,858.40
  4. Step 4: Simplify right side
    48,138.40x = 1,072,699,216.32
  5. Step 5: Solve for x
    x = 1,072,699,216.32/48,138.40
  6. Step 6: Final answer
    x = 22,283.65

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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.