Home / 70,987.62-97,961.40-39,159.48

Finding the Fourth Proportional to 70,987.62, 97,961.40 and 39,159.48

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Solution

The fourth proportional to 70,987.62, 97,961.40 and 39,159.48 is: 54,039.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,987.62 : 97,961.40 = 39,159.48 : x
  2. Step 2: Convert to fraction form
    70,987.62/97,961.40 = 39,159.48/x
  3. Step 3: Cross multiply
    70,987.62x = 97,961.40 × 39,159.48
  4. Step 4: Simplify right side
    70,987.62x = 3,836,117,484.07
  5. Step 5: Solve for x
    x = 3,836,117,484.07/70,987.62
  6. Step 6: Final answer
    x = 54,039.25

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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.