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Finding the Fourth Proportional to 70,939.78, 97,893.90 and 38,673.70

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Solution

The fourth proportional to 70,939.78, 97,893.90 and 38,673.70 is: 53,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.78 : 97,893.90 = 38,673.70 : x
  2. Step 2: Convert to fraction form
    70,939.78/97,893.90 = 38,673.70/x
  3. Step 3: Cross multiply
    70,939.78x = 97,893.90 × 38,673.70
  4. Step 4: Simplify right side
    70,939.78x = 3,785,919,320.43
  5. Step 5: Solve for x
    x = 3,785,919,320.43/70,939.78
  6. Step 6: Final answer
    x = 53,368.07

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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.