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Finding the Fourth Proportional to 74,019.96, 102,118.86 and 47,157.66

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Solution

The fourth proportional to 74,019.96, 102,118.86 and 47,157.66 is: 65,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,019.96 : 102,118.86 = 47,157.66 : x
  2. Step 2: Convert to fraction form
    74,019.96/102,118.86 = 47,157.66/x
  3. Step 3: Cross multiply
    74,019.96x = 102,118.86 × 47,157.66
  4. Step 4: Simplify right side
    74,019.96x = 4,815,686,479.47
  5. Step 5: Solve for x
    x = 4,815,686,479.47/74,019.96
  6. Step 6: Final answer
    x = 65,059.30

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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.