Home / 78,840.24-118,307.52-31,446.96

Finding the Fourth Proportional to 78,840.24, 118,307.52 and 31,446.96

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Solution

The fourth proportional to 78,840.24, 118,307.52 and 31,446.96 is: 47,189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840.24 : 118,307.52 = 31,446.96 : x
  2. Step 2: Convert to fraction form
    78,840.24/118,307.52 = 31,446.96/x
  3. Step 3: Cross multiply
    78,840.24x = 118,307.52 × 31,446.96
  4. Step 4: Simplify right side
    78,840.24x = 3,720,411,849.14
  5. Step 5: Solve for x
    x = 3,720,411,849.14/78,840.24
  6. Step 6: Final answer
    x = 47,189.25

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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.