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Finding the Fourth Proportional to 70,938.28, 97,894.32 and 38,672.80

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Solution

The fourth proportional to 70,938.28, 97,894.32 and 38,672.80 is: 53,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,938.28 : 97,894.32 = 38,672.80 : x
  2. Step 2: Convert to fraction form
    70,938.28/97,894.32 = 38,672.80/x
  3. Step 3: Cross multiply
    70,938.28x = 97,894.32 × 38,672.80
  4. Step 4: Simplify right side
    70,938.28x = 3,785,847,458.50
  5. Step 5: Solve for x
    x = 3,785,847,458.50/70,938.28
  6. Step 6: Final answer
    x = 53,368.19

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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.