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Finding the Fourth Proportional to 54,345.60, 81,518.40 and 47,930.40

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Solution

The fourth proportional to 54,345.60, 81,518.40 and 47,930.40 is: 71,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,345.60 : 81,518.40 = 47,930.40 : x
  2. Step 2: Convert to fraction form
    54,345.60/81,518.40 = 47,930.40/x
  3. Step 3: Cross multiply
    54,345.60x = 81,518.40 × 47,930.40
  4. Step 4: Simplify right side
    54,345.60x = 3,907,209,519.36
  5. Step 5: Solve for x
    x = 3,907,209,519.36/54,345.60
  6. Step 6: Final answer
    x = 71,895.60

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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.