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Finding the Fourth Proportional to 70,680.46, 97,539.69 and 38,415.16

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Solution

The fourth proportional to 70,680.46, 97,539.69 and 38,415.16 is: 53,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,680.46 : 97,539.69 = 38,415.16 : x
  2. Step 2: Convert to fraction form
    70,680.46/97,539.69 = 38,415.16/x
  3. Step 3: Cross multiply
    70,680.46x = 97,539.69 × 38,415.16
  4. Step 4: Simplify right side
    70,680.46x = 3,747,002,739.55
  5. Step 5: Solve for x
    x = 3,747,002,739.55/70,680.46
  6. Step 6: Final answer
    x = 53,013.28

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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.