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Finding the Fourth Proportional to 48,843.20, 73,264.80 and 40,678.40

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Solution

The fourth proportional to 48,843.20, 73,264.80 and 40,678.40 is: 61,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,843.20 : 73,264.80 = 40,678.40 : x
  2. Step 2: Convert to fraction form
    48,843.20/73,264.80 = 40,678.40/x
  3. Step 3: Cross multiply
    48,843.20x = 73,264.80 × 40,678.40
  4. Step 4: Simplify right side
    48,843.20x = 2,980,294,840.32
  5. Step 5: Solve for x
    x = 2,980,294,840.32/48,843.20
  6. Step 6: Final answer
    x = 61,017.60

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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.