Home / 57,281.18-85,901.27-19,831.20

Finding the Fourth Proportional to 57,281.18, 85,901.27 and 19,831.20

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Solution

The fourth proportional to 57,281.18, 85,901.27 and 19,831.20 is: 29,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,281.18 : 85,901.27 = 19,831.20 : x
  2. Step 2: Convert to fraction form
    57,281.18/85,901.27 = 19,831.20/x
  3. Step 3: Cross multiply
    57,281.18x = 85,901.27 × 19,831.20
  4. Step 4: Simplify right side
    57,281.18x = 1,703,525,001.29
  5. Step 5: Solve for x
    x = 1,703,525,001.29/57,281.18
  6. Step 6: Final answer
    x = 29,739.70

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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.