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Finding the Fourth Proportional to 64,657.98, 89,226.09 and 39,179.43

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Solution

The fourth proportional to 64,657.98, 89,226.09 and 39,179.43 is: 54,066.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,657.98 : 89,226.09 = 39,179.43 : x
  2. Step 2: Convert to fraction form
    64,657.98/89,226.09 = 39,179.43/x
  3. Step 3: Cross multiply
    64,657.98x = 89,226.09 × 39,179.43
  4. Step 4: Simplify right side
    64,657.98x = 3,495,827,347.33
  5. Step 5: Solve for x
    x = 3,495,827,347.33/64,657.98
  6. Step 6: Final answer
    x = 54,066.45

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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.