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Finding the Fourth Proportional to 70,983.95, 97,957.45 and 38,718.41

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Solution

The fourth proportional to 70,983.95, 97,957.45 and 38,718.41 is: 53,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,983.95 : 97,957.45 = 38,718.41 : x
  2. Step 2: Convert to fraction form
    70,983.95/97,957.45 = 38,718.41/x
  3. Step 3: Cross multiply
    70,983.95x = 97,957.45 × 38,718.41
  4. Step 4: Simplify right side
    70,983.95x = 3,792,756,270.27
  5. Step 5: Solve for x
    x = 3,792,756,270.27/70,983.95
  6. Step 6: Final answer
    x = 53,431.18

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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.