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Finding the Fourth Proportional to 64,794.40, 89,432.97 and 42,189.86

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Solution

The fourth proportional to 64,794.40, 89,432.97 and 42,189.86 is: 58,232.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,794.40 : 89,432.97 = 42,189.86 : x
  2. Step 2: Convert to fraction form
    64,794.40/89,432.97 = 42,189.86/x
  3. Step 3: Cross multiply
    64,794.40x = 89,432.97 × 42,189.86
  4. Step 4: Simplify right side
    64,794.40x = 3,773,164,483.68
  5. Step 5: Solve for x
    x = 3,773,164,483.68/64,794.40
  6. Step 6: Final answer
    x = 58,232.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.