Home / 78,303.12-117,416.40-54,622.01

Finding the Fourth Proportional to 78,303.12, 117,416.40 and 54,622.01

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Solution

The fourth proportional to 78,303.12, 117,416.40 and 54,622.01 is: 81,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,303.12 : 117,416.40 = 54,622.01 : x
  2. Step 2: Convert to fraction form
    78,303.12/117,416.40 = 54,622.01/x
  3. Step 3: Cross multiply
    78,303.12x = 117,416.40 × 54,622.01
  4. Step 4: Simplify right side
    78,303.12x = 6,413,519,774.96
  5. Step 5: Solve for x
    x = 6,413,519,774.96/78,303.12
  6. Step 6: Final answer
    x = 81,906.32

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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.