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Finding the Fourth Proportional to 54,585.60, 81,878.40 and 28,298.40

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Solution

The fourth proportional to 54,585.60, 81,878.40 and 28,298.40 is: 42,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,585.60 : 81,878.40 = 28,298.40 : x
  2. Step 2: Convert to fraction form
    54,585.60/81,878.40 = 28,298.40/x
  3. Step 3: Cross multiply
    54,585.60x = 81,878.40 × 28,298.40
  4. Step 4: Simplify right side
    54,585.60x = 2,317,027,714.56
  5. Step 5: Solve for x
    x = 2,317,027,714.56/54,585.60
  6. Step 6: Final answer
    x = 42,447.60

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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.