Home / 65,933.18-90,989.48-39,071.34

Finding the Fourth Proportional to 65,933.18, 90,989.48 and 39,071.34

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Solution

The fourth proportional to 65,933.18, 90,989.48 and 39,071.34 is: 53,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,933.18 : 90,989.48 = 39,071.34 : x
  2. Step 2: Convert to fraction form
    65,933.18/90,989.48 = 39,071.34/x
  3. Step 3: Cross multiply
    65,933.18x = 90,989.48 × 39,071.34
  4. Step 4: Simplify right side
    65,933.18x = 3,555,080,714.15
  5. Step 5: Solve for x
    x = 3,555,080,714.15/65,933.18
  6. Step 6: Final answer
    x = 53,919.45

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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.