Home / 57,430.31-86,145.39-17,990.49

Finding the Fourth Proportional to 57,430.31, 86,145.39 and 17,990.49

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Solution

The fourth proportional to 57,430.31, 86,145.39 and 17,990.49 is: 26,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,430.31 : 86,145.39 = 17,990.49 : x
  2. Step 2: Convert to fraction form
    57,430.31/86,145.39 = 17,990.49/x
  3. Step 3: Cross multiply
    57,430.31x = 86,145.39 × 17,990.49
  4. Step 4: Simplify right side
    57,430.31x = 1,549,797,777.34
  5. Step 5: Solve for x
    x = 1,549,797,777.34/57,430.31
  6. Step 6: Final answer
    x = 26,985.71

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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.