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Finding the Fourth Proportional to 145,289.43, 217,811.03 and 56,604.69

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Solution

The fourth proportional to 145,289.43, 217,811.03 and 56,604.69 is: 84,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,289.43 : 217,811.03 = 56,604.69 : x
  2. Step 2: Convert to fraction form
    145,289.43/217,811.03 = 56,604.69/x
  3. Step 3: Cross multiply
    145,289.43x = 217,811.03 × 56,604.69
  4. Step 4: Simplify right side
    145,289.43x = 12,329,125,548.71
  5. Step 5: Solve for x
    x = 12,329,125,548.71/145,289.43
  6. Step 6: Final answer
    x = 84,859.07

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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.