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Finding the Fourth Proportional to 70,959.29, 97,916.32 and 39,126.29

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Solution

The fourth proportional to 70,959.29, 97,916.32 and 39,126.29 is: 53,990.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,959.29 : 97,916.32 = 39,126.29 : x
  2. Step 2: Convert to fraction form
    70,959.29/97,916.32 = 39,126.29/x
  3. Step 3: Cross multiply
    70,959.29x = 97,916.32 × 39,126.29
  4. Step 4: Simplify right side
    70,959.29x = 3,831,102,332.05
  5. Step 5: Solve for x
    x = 3,831,102,332.05/70,959.29
  6. Step 6: Final answer
    x = 53,990.14

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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.