Home / 56,239-77,611.44-31,090.12

Finding the Fourth Proportional to 56,239, 77,611.44 and 31,090.12

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Solution

The fourth proportional to 56,239, 77,611.44 and 31,090.12 is: 42,905.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,239 : 77,611.44 = 31,090.12 : x
  2. Step 2: Convert to fraction form
    56,239/77,611.44 = 31,090.12/x
  3. Step 3: Cross multiply
    56,239x = 77,611.44 × 31,090.12
  4. Step 4: Simplify right side
    56,239x = 2,412,948,982.97
  5. Step 5: Solve for x
    x = 2,412,948,982.97/56,239
  6. Step 6: Final answer
    x = 42,905.26

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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.