Home / 78,968.04-118,445.40-33,987.58

Finding the Fourth Proportional to 78,968.04, 118,445.40 and 33,987.58

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Solution

The fourth proportional to 78,968.04, 118,445.40 and 33,987.58 is: 50,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,968.04 : 118,445.40 = 33,987.58 : x
  2. Step 2: Convert to fraction form
    78,968.04/118,445.40 = 33,987.58/x
  3. Step 3: Cross multiply
    78,968.04x = 118,445.40 × 33,987.58
  4. Step 4: Simplify right side
    78,968.04x = 4,025,672,212.02
  5. Step 5: Solve for x
    x = 4,025,672,212.02/78,968.04
  6. Step 6: Final answer
    x = 50,978.50

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1.5x scale

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.