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Finding the Fourth Proportional to 60,477.85, 90,732.11 and 42,743.40

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Solution

The fourth proportional to 60,477.85, 90,732.11 and 42,743.40 is: 64,125.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,477.85 : 90,732.11 = 42,743.40 : x
  2. Step 2: Convert to fraction form
    60,477.85/90,732.11 = 42,743.40/x
  3. Step 3: Cross multiply
    60,477.85x = 90,732.11 × 42,743.40
  4. Step 4: Simplify right side
    60,477.85x = 3,878,198,656.86
  5. Step 5: Solve for x
    x = 3,878,198,656.86/60,477.85
  6. Step 6: Final answer
    x = 64,125.94

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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.