Home / 42,831.70-64,210.58-20,614.50

Finding the Fourth Proportional to 42,831.70, 64,210.58 and 20,614.50

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Solution

The fourth proportional to 42,831.70, 64,210.58 and 20,614.50 is: 30,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,831.70 : 64,210.58 = 20,614.50 : x
  2. Step 2: Convert to fraction form
    42,831.70/64,210.58 = 20,614.50/x
  3. Step 3: Cross multiply
    42,831.70x = 64,210.58 × 20,614.50
  4. Step 4: Simplify right side
    42,831.70x = 1,323,669,001.41
  5. Step 5: Solve for x
    x = 1,323,669,001.41/42,831.70
  6. Step 6: Final answer
    x = 30,903.96

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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.