Home / 57,831.96-86,748.56-20,385.06

Finding the Fourth Proportional to 57,831.96, 86,748.56 and 20,385.06

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Solution

The fourth proportional to 57,831.96, 86,748.56 and 20,385.06 is: 30,577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,831.96 : 86,748.56 = 20,385.06 : x
  2. Step 2: Convert to fraction form
    57,831.96/86,748.56 = 20,385.06/x
  3. Step 3: Cross multiply
    57,831.96x = 86,748.56 × 20,385.06
  4. Step 4: Simplify right side
    57,831.96x = 1,768,374,600.51
  5. Step 5: Solve for x
    x = 1,768,374,600.51/57,831.96
  6. Step 6: Final answer
    x = 30,577.81

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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.