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Finding the Fourth Proportional to 57,501.65, 86,137.65 and 45,675.45

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Solution

The fourth proportional to 57,501.65, 86,137.65 and 45,675.45 is: 68,421.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,501.65 : 86,137.65 = 45,675.45 : x
  2. Step 2: Convert to fraction form
    57,501.65/86,137.65 = 45,675.45/x
  3. Step 3: Cross multiply
    57,501.65x = 86,137.65 × 45,675.45
  4. Step 4: Simplify right side
    57,501.65x = 3,934,375,925.69
  5. Step 5: Solve for x
    x = 3,934,375,925.69/57,501.65
  6. Step 6: Final answer
    x = 68,421.96

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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.