Home / 70,385.32-97,104.72-40,172.32

Finding the Fourth Proportional to 70,385.32, 97,104.72 and 40,172.32

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Solution

The fourth proportional to 70,385.32, 97,104.72 and 40,172.32 is: 55,422.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,385.32 : 97,104.72 = 40,172.32 : x
  2. Step 2: Convert to fraction form
    70,385.32/97,104.72 = 40,172.32/x
  3. Step 3: Cross multiply
    70,385.32x = 97,104.72 × 40,172.32
  4. Step 4: Simplify right side
    70,385.32x = 3,900,921,885.35
  5. Step 5: Solve for x
    x = 3,900,921,885.35/70,385.32
  6. Step 6: Final answer
    x = 55,422.38

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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.