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Finding the Fourth Proportional to 70,661.90, 97,508.84 and 40,447.46

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Solution

The fourth proportional to 70,661.90, 97,508.84 and 40,447.46 is: 55,814.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,661.90 : 97,508.84 = 40,447.46 : x
  2. Step 2: Convert to fraction form
    70,661.90/97,508.84 = 40,447.46/x
  3. Step 3: Cross multiply
    70,661.90x = 97,508.84 × 40,447.46
  4. Step 4: Simplify right side
    70,661.90x = 3,943,984,905.55
  5. Step 5: Solve for x
    x = 3,943,984,905.55/70,661.90
  6. Step 6: Final answer
    x = 55,814.87

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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.