Home / 70,890.13-97,831.70-42,203.31

Finding the Fourth Proportional to 70,890.13, 97,831.70 and 42,203.31

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Solution

The fourth proportional to 70,890.13, 97,831.70 and 42,203.31 is: 58,242.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,890.13 : 97,831.70 = 42,203.31 : x
  2. Step 2: Convert to fraction form
    70,890.13/97,831.70 = 42,203.31/x
  3. Step 3: Cross multiply
    70,890.13x = 97,831.70 × 42,203.31
  4. Step 4: Simplify right side
    70,890.13x = 4,128,821,562.93
  5. Step 5: Solve for x
    x = 4,128,821,562.93/70,890.13
  6. Step 6: Final answer
    x = 58,242.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.