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Finding the Fourth Proportional to 70,389.46, 97,137.47 and 38,559.49

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Solution

The fourth proportional to 70,389.46, 97,137.47 and 38,559.49 is: 53,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,389.46 : 97,137.47 = 38,559.49 : x
  2. Step 2: Convert to fraction form
    70,389.46/97,137.47 = 38,559.49/x
  3. Step 3: Cross multiply
    70,389.46x = 97,137.47 × 38,559.49
  4. Step 4: Simplify right side
    70,389.46x = 3,745,571,012.05
  5. Step 5: Solve for x
    x = 3,745,571,012.05/70,389.46
  6. Step 6: Final answer
    x = 53,212.10

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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.