Home / 70,987.32-97,965.36-40,781.16

Finding the Fourth Proportional to 70,987.32, 97,965.36 and 40,781.16

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Solution

The fourth proportional to 70,987.32, 97,965.36 and 40,781.16 is: 56,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,987.32 : 97,965.36 = 40,781.16 : x
  2. Step 2: Convert to fraction form
    70,987.32/97,965.36 = 40,781.16/x
  3. Step 3: Cross multiply
    70,987.32x = 97,965.36 × 40,781.16
  4. Step 4: Simplify right side
    70,987.32x = 3,995,141,020.62
  5. Step 5: Solve for x
    x = 3,995,141,020.62/70,987.32
  6. Step 6: Final answer
    x = 56,279.64

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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.