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Finding the Fourth Proportional to 64,641.48, 89,204.82 and 36,347.40

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Solution

The fourth proportional to 64,641.48, 89,204.82 and 36,347.40 is: 50,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,641.48 : 89,204.82 = 36,347.40 : x
  2. Step 2: Convert to fraction form
    64,641.48/89,204.82 = 36,347.40/x
  3. Step 3: Cross multiply
    64,641.48x = 89,204.82 × 36,347.40
  4. Step 4: Simplify right side
    64,641.48x = 3,242,363,274.47
  5. Step 5: Solve for x
    x = 3,242,363,274.47/64,641.48
  6. Step 6: Final answer
    x = 50,159.17

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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.