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Finding the Fourth Proportional to 63,693.60, 87,900 and 35,401.92

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Solution

The fourth proportional to 63,693.60, 87,900 and 35,401.92 is: 48,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,693.60 : 87,900 = 35,401.92 : x
  2. Step 2: Convert to fraction form
    63,693.60/87,900 = 35,401.92/x
  3. Step 3: Cross multiply
    63,693.60x = 87,900 × 35,401.92
  4. Step 4: Simplify right side
    63,693.60x = 3,111,828,768
  5. Step 5: Solve for x
    x = 3,111,828,768/63,693.60
  6. Step 6: Final answer
    x = 48,856.22

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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.