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Finding the Fourth Proportional to 56,836.78, 85,279.74 and 30,510.78

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Solution

The fourth proportional to 56,836.78, 85,279.74 and 30,510.78 is: 45,779.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,836.78 : 85,279.74 = 30,510.78 : x
  2. Step 2: Convert to fraction form
    56,836.78/85,279.74 = 30,510.78/x
  3. Step 3: Cross multiply
    56,836.78x = 85,279.74 × 30,510.78
  4. Step 4: Simplify right side
    56,836.78x = 2,601,951,385.60
  5. Step 5: Solve for x
    x = 2,601,951,385.60/56,836.78
  6. Step 6: Final answer
    x = 45,779.36

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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.