Home / 78,070.66-117,222.63-76,904.26

Finding the Fourth Proportional to 78,070.66, 117,222.63 and 76,904.26

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Solution

The fourth proportional to 78,070.66, 117,222.63 and 76,904.26 is: 115,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,070.66 : 117,222.63 = 76,904.26 : x
  2. Step 2: Convert to fraction form
    78,070.66/117,222.63 = 76,904.26/x
  3. Step 3: Cross multiply
    78,070.66x = 117,222.63 × 76,904.26
  4. Step 4: Simplify right side
    78,070.66x = 9,014,919,615.40
  5. Step 5: Solve for x
    x = 9,014,919,615.40/78,070.66
  6. Step 6: Final answer
    x = 115,471.29

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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.