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Finding the Fourth Proportional to 64,213.64, 88,621.50 and 36,990.68

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Solution

The fourth proportional to 64,213.64, 88,621.50 and 36,990.68 is: 51,050.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,213.64 : 88,621.50 = 36,990.68 : x
  2. Step 2: Convert to fraction form
    64,213.64/88,621.50 = 36,990.68/x
  3. Step 3: Cross multiply
    64,213.64x = 88,621.50 × 36,990.68
  4. Step 4: Simplify right side
    64,213.64x = 3,278,169,547.62
  5. Step 5: Solve for x
    x = 3,278,169,547.62/64,213.64
  6. Step 6: Final answer
    x = 51,050.98

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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.