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Finding the Fourth Proportional to 70,820.71, 97,728.87 and 38,983.39

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Solution

The fourth proportional to 70,820.71, 97,728.87 and 38,983.39 is: 53,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,820.71 : 97,728.87 = 38,983.39 : x
  2. Step 2: Convert to fraction form
    70,820.71/97,728.87 = 38,983.39/x
  3. Step 3: Cross multiply
    70,820.71x = 97,728.87 × 38,983.39
  4. Step 4: Simplify right side
    70,820.71x = 3,809,802,653.47
  5. Step 5: Solve for x
    x = 3,809,802,653.47/70,820.71
  6. Step 6: Final answer
    x = 53,795.04

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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.