Home / 38,987.68-58,345.44-31,885.60

Finding the Fourth Proportional to 38,987.68, 58,345.44 and 31,885.60

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Solution

The fourth proportional to 38,987.68, 58,345.44 and 31,885.60 is: 47,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987.68 : 58,345.44 = 31,885.60 : x
  2. Step 2: Convert to fraction form
    38,987.68/58,345.44 = 31,885.60/x
  3. Step 3: Cross multiply
    38,987.68x = 58,345.44 × 31,885.60
  4. Step 4: Simplify right side
    38,987.68x = 1,860,379,361.66
  5. Step 5: Solve for x
    x = 1,860,379,361.66/38,987.68
  6. Step 6: Final answer
    x = 47,717.11

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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.