Home / 78,768.60-118,112.10-23,357.40

Finding the Fourth Proportional to 78,768.60, 118,112.10 and 23,357.40

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Solution

The fourth proportional to 78,768.60, 118,112.10 and 23,357.40 is: 35,024.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,768.60 : 118,112.10 = 23,357.40 : x
  2. Step 2: Convert to fraction form
    78,768.60/118,112.10 = 23,357.40/x
  3. Step 3: Cross multiply
    78,768.60x = 118,112.10 × 23,357.40
  4. Step 4: Simplify right side
    78,768.60x = 2,758,791,564.54
  5. Step 5: Solve for x
    x = 2,758,791,564.54/78,768.60
  6. Step 6: Final answer
    x = 35,024.00

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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.