Home / 78,554.51-117,816.56-30,523.04

Finding the Fourth Proportional to 78,554.51, 117,816.56 and 30,523.04

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Solution

The fourth proportional to 78,554.51, 117,816.56 and 30,523.04 is: 45,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,554.51 : 117,816.56 = 30,523.04 : x
  2. Step 2: Convert to fraction form
    78,554.51/117,816.56 = 30,523.04/x
  3. Step 3: Cross multiply
    78,554.51x = 117,816.56 × 30,523.04
  4. Step 4: Simplify right side
    78,554.51x = 3,596,118,831.84
  5. Step 5: Solve for x
    x = 3,596,118,831.84/78,554.51
  6. Step 6: Final answer
    x = 45,778.64

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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.