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Finding the Fourth Proportional to 70,800.21, 97,700.58 and 38,962.98

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Solution

The fourth proportional to 70,800.21, 97,700.58 and 38,962.98 is: 53,766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,800.21 : 97,700.58 = 38,962.98 : x
  2. Step 2: Convert to fraction form
    70,800.21/97,700.58 = 38,962.98/x
  3. Step 3: Cross multiply
    70,800.21x = 97,700.58 × 38,962.98
  4. Step 4: Simplify right side
    70,800.21x = 3,806,705,744.53
  5. Step 5: Solve for x
    x = 3,806,705,744.53/70,800.21
  6. Step 6: Final answer
    x = 53,766.87

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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.