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Finding the Fourth Proportional to 70,571.50, 97,389.81 and 38,306.76

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Solution

The fourth proportional to 70,571.50, 97,389.81 and 38,306.76 is: 52,863.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,571.50 : 97,389.81 = 38,306.76 : x
  2. Step 2: Convert to fraction form
    70,571.50/97,389.81 = 38,306.76/x
  3. Step 3: Cross multiply
    70,571.50x = 97,389.81 × 38,306.76
  4. Step 4: Simplify right side
    70,571.50x = 3,730,688,078.12
  5. Step 5: Solve for x
    x = 3,730,688,078.12/70,571.50
  6. Step 6: Final answer
    x = 52,863.95

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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.