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Finding the Fourth Proportional to 170,909.55, 256,360.95 and 51,047.68

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Solution

The fourth proportional to 170,909.55, 256,360.95 and 51,047.68 is: 76,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,909.55 : 256,360.95 = 51,047.68 : x
  2. Step 2: Convert to fraction form
    170,909.55/256,360.95 = 51,047.68/x
  3. Step 3: Cross multiply
    170,909.55x = 256,360.95 × 51,047.68
  4. Step 4: Simplify right side
    170,909.55x = 13,086,631,740.10
  5. Step 5: Solve for x
    x = 13,086,631,740.10/170,909.55
  6. Step 6: Final answer
    x = 76,570.51

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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.