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Finding the Fourth Proportional to 70,902.95, 97,840.71 and 39,071.97

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Solution

The fourth proportional to 70,902.95, 97,840.71 and 39,071.97 is: 53,916.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.95 : 97,840.71 = 39,071.97 : x
  2. Step 2: Convert to fraction form
    70,902.95/97,840.71 = 39,071.97/x
  3. Step 3: Cross multiply
    70,902.95x = 97,840.71 × 39,071.97
  4. Step 4: Simplify right side
    70,902.95x = 3,822,829,285.90
  5. Step 5: Solve for x
    x = 3,822,829,285.90/70,902.95
  6. Step 6: Final answer
    x = 53,916.37

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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.