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Finding the Fourth Proportional to 60,005.40, 89,910.90 and 51,257.40

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Solution

The fourth proportional to 60,005.40, 89,910.90 and 51,257.40 is: 76,803.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,005.40 : 89,910.90 = 51,257.40 : x
  2. Step 2: Convert to fraction form
    60,005.40/89,910.90 = 51,257.40/x
  3. Step 3: Cross multiply
    60,005.40x = 89,910.90 × 51,257.40
  4. Step 4: Simplify right side
    60,005.40x = 4,608,598,965.66
  5. Step 5: Solve for x
    x = 4,608,598,965.66/60,005.40
  6. Step 6: Final answer
    x = 76,803.07

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1.5x scale

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.