Home / 42,831.70-64,210.59-20,614.51

Finding the Fourth Proportional to 42,831.70, 64,210.59 and 20,614.51

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Solution

The fourth proportional to 42,831.70, 64,210.59 and 20,614.51 is: 30,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,831.70 : 64,210.59 = 20,614.51 : x
  2. Step 2: Convert to fraction form
    42,831.70/64,210.59 = 20,614.51/x
  3. Step 3: Cross multiply
    42,831.70x = 64,210.59 × 20,614.51
  4. Step 4: Simplify right side
    42,831.70x = 1,323,669,849.66
  5. Step 5: Solve for x
    x = 1,323,669,849.66/42,831.70
  6. Step 6: Final answer
    x = 30,903.98

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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.