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Finding the Fourth Proportional to 57,983.80, 86,975.70 and 34,655.80

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Solution

The fourth proportional to 57,983.80, 86,975.70 and 34,655.80 is: 51,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,983.80 : 86,975.70 = 34,655.80 : x
  2. Step 2: Convert to fraction form
    57,983.80/86,975.70 = 34,655.80/x
  3. Step 3: Cross multiply
    57,983.80x = 86,975.70 × 34,655.80
  4. Step 4: Simplify right side
    57,983.80x = 3,014,212,464.06
  5. Step 5: Solve for x
    x = 3,014,212,464.06/57,983.80
  6. Step 6: Final answer
    x = 51,983.70

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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.