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Finding the Fourth Proportional to 70,850.32, 97,774.14 and 39,020.20

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Solution

The fourth proportional to 70,850.32, 97,774.14 and 39,020.20 is: 53,848.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,850.32 : 97,774.14 = 39,020.20 : x
  2. Step 2: Convert to fraction form
    70,850.32/97,774.14 = 39,020.20/x
  3. Step 3: Cross multiply
    70,850.32x = 97,774.14 × 39,020.20
  4. Step 4: Simplify right side
    70,850.32x = 3,815,166,497.63
  5. Step 5: Solve for x
    x = 3,815,166,497.63/70,850.32
  6. Step 6: Final answer
    x = 53,848.26

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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.