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Finding the Fourth Proportional to 66,657.64, 99,398.54 and 66,057.58

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Solution

The fourth proportional to 66,657.64, 99,398.54 and 66,057.58 is: 98,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,657.64 : 99,398.54 = 66,057.58 : x
  2. Step 2: Convert to fraction form
    66,657.64/99,398.54 = 66,057.58/x
  3. Step 3: Cross multiply
    66,657.64x = 99,398.54 × 66,057.58
  4. Step 4: Simplify right side
    66,657.64x = 6,566,027,007.93
  5. Step 5: Solve for x
    x = 6,566,027,007.93/66,657.64
  6. Step 6: Final answer
    x = 98,503.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.