Home / 70,378.40-97,121.19-40,173.29

Finding the Fourth Proportional to 70,378.40, 97,121.19 and 40,173.29

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Solution

The fourth proportional to 70,378.40, 97,121.19 and 40,173.29 is: 55,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,378.40 : 97,121.19 = 40,173.29 : x
  2. Step 2: Convert to fraction form
    70,378.40/97,121.19 = 40,173.29/x
  3. Step 3: Cross multiply
    70,378.40x = 97,121.19 × 40,173.29
  4. Step 4: Simplify right side
    70,378.40x = 3,901,677,731.02
  5. Step 5: Solve for x
    x = 3,901,677,731.02/70,378.40
  6. Step 6: Final answer
    x = 55,438.57

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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.