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Finding the Fourth Proportional to 66,698.90, 100,048.35 and 63,746.45

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Solution

The fourth proportional to 66,698.90, 100,048.35 and 63,746.45 is: 95,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,698.90 : 100,048.35 = 63,746.45 : x
  2. Step 2: Convert to fraction form
    66,698.90/100,048.35 = 63,746.45/x
  3. Step 3: Cross multiply
    66,698.90x = 100,048.35 × 63,746.45
  4. Step 4: Simplify right side
    66,698.90x = 6,377,727,140.86
  5. Step 5: Solve for x
    x = 6,377,727,140.86/66,698.90
  6. Step 6: Final answer
    x = 95,619.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.