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Finding the Fourth Proportional to 64,506.40, 89,018.92 and 36,212.29

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Solution

The fourth proportional to 64,506.40, 89,018.92 and 36,212.29 is: 49,973.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,506.40 : 89,018.92 = 36,212.29 : x
  2. Step 2: Convert to fraction form
    64,506.40/89,018.92 = 36,212.29/x
  3. Step 3: Cross multiply
    64,506.40x = 89,018.92 × 36,212.29
  4. Step 4: Simplify right side
    64,506.40x = 3,223,578,835.25
  5. Step 5: Solve for x
    x = 3,223,578,835.25/64,506.40
  6. Step 6: Final answer
    x = 49,973.01

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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.