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Finding the Fourth Proportional to 57,741.40, 86,612.10 and 51,520.60

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Solution

The fourth proportional to 57,741.40, 86,612.10 and 51,520.60 is: 77,280.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,741.40 : 86,612.10 = 51,520.60 : x
  2. Step 2: Convert to fraction form
    57,741.40/86,612.10 = 51,520.60/x
  3. Step 3: Cross multiply
    57,741.40x = 86,612.10 × 51,520.60
  4. Step 4: Simplify right side
    57,741.40x = 4,462,307,359.26
  5. Step 5: Solve for x
    x = 4,462,307,359.26/57,741.40
  6. Step 6: Final answer
    x = 77,280.90

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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.