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Finding the Fourth Proportional to 56,905.80, 85,358.70 and 27,308.40

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Solution

The fourth proportional to 56,905.80, 85,358.70 and 27,308.40 is: 40,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,905.80 : 85,358.70 = 27,308.40 : x
  2. Step 2: Convert to fraction form
    56,905.80/85,358.70 = 27,308.40/x
  3. Step 3: Cross multiply
    56,905.80x = 85,358.70 × 27,308.40
  4. Step 4: Simplify right side
    56,905.80x = 2,331,009,523.08
  5. Step 5: Solve for x
    x = 2,331,009,523.08/56,905.80
  6. Step 6: Final answer
    x = 40,962.60

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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.