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Finding the Fourth Proportional to 56,805.60, 78,405.07 and 35,311.56

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Solution

The fourth proportional to 56,805.60, 78,405.07 and 35,311.56 is: 48,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,805.60 : 78,405.07 = 35,311.56 : x
  2. Step 2: Convert to fraction form
    56,805.60/78,405.07 = 35,311.56/x
  3. Step 3: Cross multiply
    56,805.60x = 78,405.07 × 35,311.56
  4. Step 4: Simplify right side
    56,805.60x = 2,768,605,333.61
  5. Step 5: Solve for x
    x = 2,768,605,333.61/56,805.60
  6. Step 6: Final answer
    x = 48,738.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.