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Finding the Fourth Proportional to 63,688.75, 87,894.12 and 35,403.55

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Solution

The fourth proportional to 63,688.75, 87,894.12 and 35,403.55 is: 48,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,688.75 : 87,894.12 = 35,403.55 : x
  2. Step 2: Convert to fraction form
    63,688.75/87,894.12 = 35,403.55/x
  3. Step 3: Cross multiply
    63,688.75x = 87,894.12 × 35,403.55
  4. Step 4: Simplify right side
    63,688.75x = 3,111,763,872.13
  5. Step 5: Solve for x
    x = 3,111,763,872.13/63,688.75
  6. Step 6: Final answer
    x = 48,858.93

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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.