Home / 78,831.06-118,176.26-28,899.49

Finding the Fourth Proportional to 78,831.06, 118,176.26 and 28,899.49

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Solution

The fourth proportional to 78,831.06, 118,176.26 and 28,899.49 is: 43,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.06 : 118,176.26 = 28,899.49 : x
  2. Step 2: Convert to fraction form
    78,831.06/118,176.26 = 28,899.49/x
  3. Step 3: Cross multiply
    78,831.06x = 118,176.26 × 28,899.49
  4. Step 4: Simplify right side
    78,831.06x = 3,415,233,204.17
  5. Step 5: Solve for x
    x = 3,415,233,204.17/78,831.06
  6. Step 6: Final answer
    x = 43,323.45

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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.