Home / 38,518.40-57,777.60-30,742.40

Finding the Fourth Proportional to 38,518.40, 57,777.60 and 30,742.40

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Solution

The fourth proportional to 38,518.40, 57,777.60 and 30,742.40 is: 46,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.40 : 57,777.60 = 30,742.40 : x
  2. Step 2: Convert to fraction form
    38,518.40/57,777.60 = 30,742.40/x
  3. Step 3: Cross multiply
    38,518.40x = 57,777.60 × 30,742.40
  4. Step 4: Simplify right side
    38,518.40x = 1,776,222,090.24
  5. Step 5: Solve for x
    x = 1,776,222,090.24/38,518.40
  6. Step 6: Final answer
    x = 46,113.60

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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.