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Finding the Fourth Proportional to 70,818.95, 97,732.08 and 38,989.80

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Solution

The fourth proportional to 70,818.95, 97,732.08 and 38,989.80 is: 53,806.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,818.95 : 97,732.08 = 38,989.80 : x
  2. Step 2: Convert to fraction form
    70,818.95/97,732.08 = 38,989.80/x
  3. Step 3: Cross multiply
    70,818.95x = 97,732.08 × 38,989.80
  4. Step 4: Simplify right side
    70,818.95x = 3,810,554,252.78
  5. Step 5: Solve for x
    x = 3,810,554,252.78/70,818.95
  6. Step 6: Final answer
    x = 53,806.99

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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.