Home / 42,831.20-64,209.84-20,614.01

Finding the Fourth Proportional to 42,831.20, 64,209.84 and 20,614.01

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Solution

The fourth proportional to 42,831.20, 64,209.84 and 20,614.01 is: 30,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,831.20 : 64,209.84 = 20,614.01 : x
  2. Step 2: Convert to fraction form
    42,831.20/64,209.84 = 20,614.01/x
  3. Step 3: Cross multiply
    42,831.20x = 64,209.84 × 20,614.01
  4. Step 4: Simplify right side
    42,831.20x = 1,323,621,962.81
  5. Step 5: Solve for x
    x = 1,323,621,962.81/42,831.20
  6. Step 6: Final answer
    x = 30,903.22

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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.