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Finding the Fourth Proportional to 70,951.89, 97,918.02 and 39,120.74

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Solution

The fourth proportional to 70,951.89, 97,918.02 and 39,120.74 is: 53,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.89 : 97,918.02 = 39,120.74 : x
  2. Step 2: Convert to fraction form
    70,951.89/97,918.02 = 39,120.74/x
  3. Step 3: Cross multiply
    70,951.89x = 97,918.02 × 39,120.74
  4. Step 4: Simplify right side
    70,951.89x = 3,830,625,401.73
  5. Step 5: Solve for x
    x = 3,830,625,401.73/70,951.89
  6. Step 6: Final answer
    x = 53,989.05

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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.