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Finding the Fourth Proportional to 70,951.88, 97,911.72 and 39,120.24

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Solution

The fourth proportional to 70,951.88, 97,911.72 and 39,120.24 is: 53,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.88 : 97,911.72 = 39,120.24 : x
  2. Step 2: Convert to fraction form
    70,951.88/97,911.72 = 39,120.24/x
  3. Step 3: Cross multiply
    70,951.88x = 97,911.72 × 39,120.24
  4. Step 4: Simplify right side
    70,951.88x = 3,830,329,985.21
  5. Step 5: Solve for x
    x = 3,830,329,985.21/70,951.88
  6. Step 6: Final answer
    x = 53,984.90

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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.