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Finding the Fourth Proportional to 60,570, 90,795.97 and 28,971.81

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Solution

The fourth proportional to 60,570, 90,795.97 and 28,971.81 is: 43,429.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,570 : 90,795.97 = 28,971.81 : x
  2. Step 2: Convert to fraction form
    60,570/90,795.97 = 28,971.81/x
  3. Step 3: Cross multiply
    60,570x = 90,795.97 × 28,971.81
  4. Step 4: Simplify right side
    60,570x = 2,630,523,591.61
  5. Step 5: Solve for x
    x = 2,630,523,591.61/60,570
  6. Step 6: Final answer
    x = 43,429.48

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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.