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Finding the Fourth Proportional to 47,994, 66,336.60 and 42,285.12

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Solution

The fourth proportional to 47,994, 66,336.60 and 42,285.12 is: 58,445.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,994 : 66,336.60 = 42,285.12 : x
  2. Step 2: Convert to fraction form
    47,994/66,336.60 = 42,285.12/x
  3. Step 3: Cross multiply
    47,994x = 66,336.60 × 42,285.12
  4. Step 4: Simplify right side
    47,994x = 2,805,051,091.39
  5. Step 5: Solve for x
    x = 2,805,051,091.39/47,994
  6. Step 6: Final answer
    x = 58,445.87

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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.