Home / 70,392.48-97,136.64-40,170.72

Finding the Fourth Proportional to 70,392.48, 97,136.64 and 40,170.72

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Solution

The fourth proportional to 70,392.48, 97,136.64 and 40,170.72 is: 55,432.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,392.48 : 97,136.64 = 40,170.72 : x
  2. Step 2: Convert to fraction form
    70,392.48/97,136.64 = 40,170.72/x
  3. Step 3: Cross multiply
    70,392.48x = 97,136.64 × 40,170.72
  4. Step 4: Simplify right side
    70,392.48x = 3,902,048,767.18
  5. Step 5: Solve for x
    x = 3,902,048,767.18/70,392.48
  6. Step 6: Final answer
    x = 55,432.75

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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.