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Finding the Fourth Proportional to 70,841.88, 97,739.76 and 40,209.96

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Solution

The fourth proportional to 70,841.88, 97,739.76 and 40,209.96 is: 55,477.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,841.88 : 97,739.76 = 40,209.96 : x
  2. Step 2: Convert to fraction form
    70,841.88/97,739.76 = 40,209.96/x
  3. Step 3: Cross multiply
    70,841.88x = 97,739.76 × 40,209.96
  4. Step 4: Simplify right side
    70,841.88x = 3,930,111,840.01
  5. Step 5: Solve for x
    x = 3,930,111,840.01/70,841.88
  6. Step 6: Final answer
    x = 55,477.24

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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.