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Finding the Fourth Proportional to 70,902.40, 97,845.11 and 39,071.29

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Solution

The fourth proportional to 70,902.40, 97,845.11 and 39,071.29 is: 53,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.40 : 97,845.11 = 39,071.29 : x
  2. Step 2: Convert to fraction form
    70,902.40/97,845.11 = 39,071.29/x
  3. Step 3: Cross multiply
    70,902.40x = 97,845.11 × 39,071.29
  4. Step 4: Simplify right side
    70,902.40x = 3,822,934,667.89
  5. Step 5: Solve for x
    x = 3,822,934,667.89/70,902.40
  6. Step 6: Final answer
    x = 53,918.27

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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.