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Finding the Fourth Proportional to 57,875.70, 86,643.45 and 43,149.90

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Solution

The fourth proportional to 57,875.70, 86,643.45 and 43,149.90 is: 64,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,875.70 : 86,643.45 = 43,149.90 : x
  2. Step 2: Convert to fraction form
    57,875.70/86,643.45 = 43,149.90/x
  3. Step 3: Cross multiply
    57,875.70x = 86,643.45 × 43,149.90
  4. Step 4: Simplify right side
    57,875.70x = 3,738,656,203.16
  5. Step 5: Solve for x
    x = 3,738,656,203.16/57,875.70
  6. Step 6: Final answer
    x = 64,598.03

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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.