Home / 78,416.83-117,630.51-25,826.77

Finding the Fourth Proportional to 78,416.83, 117,630.51 and 25,826.77

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Solution

The fourth proportional to 78,416.83, 117,630.51 and 25,826.77 is: 38,741.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416.83 : 117,630.51 = 25,826.77 : x
  2. Step 2: Convert to fraction form
    78,416.83/117,630.51 = 25,826.77/x
  3. Step 3: Cross multiply
    78,416.83x = 117,630.51 × 25,826.77
  4. Step 4: Simplify right side
    78,416.83x = 3,038,016,126.75
  5. Step 5: Solve for x
    x = 3,038,016,126.75/78,416.83
  6. Step 6: Final answer
    x = 38,741.89

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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.