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Finding the Fourth Proportional to 56,980.90, 85,490.34 and 35,896.60

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Solution

The fourth proportional to 56,980.90, 85,490.34 and 35,896.60 is: 53,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,980.90 : 85,490.34 = 35,896.60 : x
  2. Step 2: Convert to fraction form
    56,980.90/85,490.34 = 35,896.60/x
  3. Step 3: Cross multiply
    56,980.90x = 85,490.34 × 35,896.60
  4. Step 4: Simplify right side
    56,980.90x = 3,068,812,538.84
  5. Step 5: Solve for x
    x = 3,068,812,538.84/56,980.90
  6. Step 6: Final answer
    x = 53,856.86

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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.