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Finding the Fourth Proportional to 86,987.70, 130,493.70 and 37,067.40

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Solution

The fourth proportional to 86,987.70, 130,493.70 and 37,067.40 is: 55,606.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.70 : 130,493.70 = 37,067.40 : x
  2. Step 2: Convert to fraction form
    86,987.70/130,493.70 = 37,067.40/x
  3. Step 3: Cross multiply
    86,987.70x = 130,493.70 × 37,067.40
  4. Step 4: Simplify right side
    86,987.70x = 4,837,062,175.38
  5. Step 5: Solve for x
    x = 4,837,062,175.38/86,987.70
  6. Step 6: Final answer
    x = 55,606.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.