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Finding the Fourth Proportional to 45,289.69, 67,919.13 and 15,700.63

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Solution

The fourth proportional to 45,289.69, 67,919.13 and 15,700.63 is: 23,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,289.69 : 67,919.13 = 15,700.63 : x
  2. Step 2: Convert to fraction form
    45,289.69/67,919.13 = 15,700.63/x
  3. Step 3: Cross multiply
    45,289.69x = 67,919.13 × 15,700.63
  4. Step 4: Simplify right side
    45,289.69x = 1,066,373,130.05
  5. Step 5: Solve for x
    x = 1,066,373,130.05/45,289.69
  6. Step 6: Final answer
    x = 23,545.60

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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.