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Finding the Fourth Proportional to 70,584.55, 97,378.90 and 40,353.63

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Solution

The fourth proportional to 70,584.55, 97,378.90 and 40,353.63 is: 55,672.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,584.55 : 97,378.90 = 40,353.63 : x
  2. Step 2: Convert to fraction form
    70,584.55/97,378.90 = 40,353.63/x
  3. Step 3: Cross multiply
    70,584.55x = 97,378.90 × 40,353.63
  4. Step 4: Simplify right side
    70,584.55x = 3,929,592,049.96
  5. Step 5: Solve for x
    x = 3,929,592,049.96/70,584.55
  6. Step 6: Final answer
    x = 55,672.13

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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.