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Finding the Fourth Proportional to 57,612.80, 86,246.40 and 50,700.80

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Solution

The fourth proportional to 57,612.80, 86,246.40 and 50,700.80 is: 75,899.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,612.80 : 86,246.40 = 50,700.80 : x
  2. Step 2: Convert to fraction form
    57,612.80/86,246.40 = 50,700.80/x
  3. Step 3: Cross multiply
    57,612.80x = 86,246.40 × 50,700.80
  4. Step 4: Simplify right side
    57,612.80x = 4,372,761,477.12
  5. Step 5: Solve for x
    x = 4,372,761,477.12/57,612.80
  6. Step 6: Final answer
    x = 75,899.13

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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.