Home / 78,968.52-118,452.96-39,485.88

Finding the Fourth Proportional to 78,968.52, 118,452.96 and 39,485.88

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Solution

The fourth proportional to 78,968.52, 118,452.96 and 39,485.88 is: 59,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,968.52 : 118,452.96 = 39,485.88 : x
  2. Step 2: Convert to fraction form
    78,968.52/118,452.96 = 39,485.88/x
  3. Step 3: Cross multiply
    78,968.52x = 118,452.96 × 39,485.88
  4. Step 4: Simplify right side
    78,968.52x = 4,677,219,364.20
  5. Step 5: Solve for x
    x = 4,677,219,364.20/78,968.52
  6. Step 6: Final answer
    x = 59,228.91

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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.