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Finding the Fourth Proportional to 64,426.13, 88,917.77 and 39,290.21

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Solution

The fourth proportional to 64,426.13, 88,917.77 and 39,290.21 is: 54,226.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,426.13 : 88,917.77 = 39,290.21 : x
  2. Step 2: Convert to fraction form
    64,426.13/88,917.77 = 39,290.21/x
  3. Step 3: Cross multiply
    64,426.13x = 88,917.77 × 39,290.21
  4. Step 4: Simplify right side
    64,426.13x = 3,493,597,509.67
  5. Step 5: Solve for x
    x = 3,493,597,509.67/64,426.13
  6. Step 6: Final answer
    x = 54,226.41

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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.