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Finding the Fourth Proportional to 63,698.22, 87,890.13 and 35,403.30

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Solution

The fourth proportional to 63,698.22, 87,890.13 and 35,403.30 is: 48,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,698.22 : 87,890.13 = 35,403.30 : x
  2. Step 2: Convert to fraction form
    63,698.22/87,890.13 = 35,403.30/x
  3. Step 3: Cross multiply
    63,698.22x = 87,890.13 × 35,403.30
  4. Step 4: Simplify right side
    63,698.22x = 3,111,600,639.43
  5. Step 5: Solve for x
    x = 3,111,600,639.43/63,698.22
  6. Step 6: Final answer
    x = 48,849.10

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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.