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Finding the Fourth Proportional to 64,439.86, 88,926.90 and 36,145.58

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Solution

The fourth proportional to 64,439.86, 88,926.90 and 36,145.58 is: 49,880.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,439.86 : 88,926.90 = 36,145.58 : x
  2. Step 2: Convert to fraction form
    64,439.86/88,926.90 = 36,145.58/x
  3. Step 3: Cross multiply
    64,439.86x = 88,926.90 × 36,145.58
  4. Step 4: Simplify right side
    64,439.86x = 3,214,314,378.10
  5. Step 5: Solve for x
    x = 3,214,314,378.10/64,439.86
  6. Step 6: Final answer
    x = 49,880.84

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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.