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Finding the Fourth Proportional to 56,941.60, 85,412.40 and 38,279.20

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Solution

The fourth proportional to 56,941.60, 85,412.40 and 38,279.20 is: 57,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,941.60 : 85,412.40 = 38,279.20 : x
  2. Step 2: Convert to fraction form
    56,941.60/85,412.40 = 38,279.20/x
  3. Step 3: Cross multiply
    56,941.60x = 85,412.40 × 38,279.20
  4. Step 4: Simplify right side
    56,941.60x = 3,269,518,342.08
  5. Step 5: Solve for x
    x = 3,269,518,342.08/56,941.60
  6. Step 6: Final answer
    x = 57,418.80

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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.