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Finding the Fourth Proportional to 56,943.60, 85,415.40 and 56,068.80

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Solution

The fourth proportional to 56,943.60, 85,415.40 and 56,068.80 is: 84,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,943.60 : 85,415.40 = 56,068.80 : x
  2. Step 2: Convert to fraction form
    56,943.60/85,415.40 = 56,068.80/x
  3. Step 3: Cross multiply
    56,943.60x = 85,415.40 × 56,068.80
  4. Step 4: Simplify right side
    56,943.60x = 4,789,138,979.52
  5. Step 5: Solve for x
    x = 4,789,138,979.52/56,943.60
  6. Step 6: Final answer
    x = 84,103.20

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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.