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Finding the Fourth Proportional to 64,653.19, 89,221.40 and 36,358.88

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Solution

The fourth proportional to 64,653.19, 89,221.40 and 36,358.88 is: 50,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.19 : 89,221.40 = 36,358.88 : x
  2. Step 2: Convert to fraction form
    64,653.19/89,221.40 = 36,358.88/x
  3. Step 3: Cross multiply
    64,653.19x = 89,221.40 × 36,358.88
  4. Step 4: Simplify right side
    64,653.19x = 3,243,989,684.48
  5. Step 5: Solve for x
    x = 3,243,989,684.48/64,653.19
  6. Step 6: Final answer
    x = 50,175.25

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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.