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Finding the Fourth Proportional to 70,951.03, 97,913.19 and 39,121.07

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Solution

The fourth proportional to 70,951.03, 97,913.19 and 39,121.07 is: 53,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.03 : 97,913.19 = 39,121.07 : x
  2. Step 2: Convert to fraction form
    70,951.03/97,913.19 = 39,121.07/x
  3. Step 3: Cross multiply
    70,951.03x = 97,913.19 × 39,121.07
  4. Step 4: Simplify right side
    70,951.03x = 3,830,468,515.13
  5. Step 5: Solve for x
    x = 3,830,468,515.13/70,951.03
  6. Step 6: Final answer
    x = 53,987.50

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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.