Home / 78,984.33-118,495.02-54,036.12

Finding the Fourth Proportional to 78,984.33, 118,495.02 and 54,036.12

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Solution

The fourth proportional to 78,984.33, 118,495.02 and 54,036.12 is: 81,066.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,984.33 : 118,495.02 = 54,036.12 : x
  2. Step 2: Convert to fraction form
    78,984.33/118,495.02 = 54,036.12/x
  3. Step 3: Cross multiply
    78,984.33x = 118,495.02 × 54,036.12
  4. Step 4: Simplify right side
    78,984.33x = 6,403,011,120.12
  5. Step 5: Solve for x
    x = 6,403,011,120.12/78,984.33
  6. Step 6: Final answer
    x = 81,066.85

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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.