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Finding the Fourth Proportional to 71,570.88, 98,794.20 and 61,458.60

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Solution

The fourth proportional to 71,570.88, 98,794.20 and 61,458.60 is: 84,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.88 : 98,794.20 = 61,458.60 : x
  2. Step 2: Convert to fraction form
    71,570.88/98,794.20 = 61,458.60/x
  3. Step 3: Cross multiply
    71,570.88x = 98,794.20 × 61,458.60
  4. Step 4: Simplify right side
    71,570.88x = 6,071,753,220.12
  5. Step 5: Solve for x
    x = 6,071,753,220.12/71,570.88
  6. Step 6: Final answer
    x = 84,835.53

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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.