Home / 78,450.12-117,605.52-56,207.52

Finding the Fourth Proportional to 78,450.12, 117,605.52 and 56,207.52

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Solution

The fourth proportional to 78,450.12, 117,605.52 and 56,207.52 is: 84,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,450.12 : 117,605.52 = 56,207.52 : x
  2. Step 2: Convert to fraction form
    78,450.12/117,605.52 = 56,207.52/x
  3. Step 3: Cross multiply
    78,450.12x = 117,605.52 × 56,207.52
  4. Step 4: Simplify right side
    78,450.12x = 6,610,314,617.51
  5. Step 5: Solve for x
    x = 6,610,314,617.51/78,450.12
  6. Step 6: Final answer
    x = 84,261.37

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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.