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Finding the Fourth Proportional to 64,290.49, 88,764.23 and 40,128.26

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Solution

The fourth proportional to 64,290.49, 88,764.23 and 40,128.26 is: 55,404.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,290.49 : 88,764.23 = 40,128.26 : x
  2. Step 2: Convert to fraction form
    64,290.49/88,764.23 = 40,128.26/x
  3. Step 3: Cross multiply
    64,290.49x = 88,764.23 × 40,128.26
  4. Step 4: Simplify right side
    64,290.49x = 3,561,954,550.90
  5. Step 5: Solve for x
    x = 3,561,954,550.90/64,290.49
  6. Step 6: Final answer
    x = 55,404.07

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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.