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Finding the Fourth Proportional to 64,642.74, 89,215.32 and 36,353.94

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Solution

The fourth proportional to 64,642.74, 89,215.32 and 36,353.94 is: 50,173.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,642.74 : 89,215.32 = 36,353.94 : x
  2. Step 2: Convert to fraction form
    64,642.74/89,215.32 = 36,353.94/x
  3. Step 3: Cross multiply
    64,642.74x = 89,215.32 × 36,353.94
  4. Step 4: Simplify right side
    64,642.74x = 3,243,328,390.36
  5. Step 5: Solve for x
    x = 3,243,328,390.36/64,642.74
  6. Step 6: Final answer
    x = 50,173.13

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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.