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Finding the Fourth Proportional to 61,620.12, 91,946.16 and 57,858.48

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Solution

The fourth proportional to 61,620.12, 91,946.16 and 57,858.48 is: 86,333.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,620.12 : 91,946.16 = 57,858.48 : x
  2. Step 2: Convert to fraction form
    61,620.12/91,946.16 = 57,858.48/x
  3. Step 3: Cross multiply
    61,620.12x = 91,946.16 × 57,858.48
  4. Step 4: Simplify right side
    61,620.12x = 5,319,865,059.44
  5. Step 5: Solve for x
    x = 5,319,865,059.44/61,620.12
  6. Step 6: Final answer
    x = 86,333.25

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1.5x scale

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.