Home / 78,917.40-118,382.27-26,326.85

Finding the Fourth Proportional to 78,917.40, 118,382.27 and 26,326.85

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Solution

The fourth proportional to 78,917.40, 118,382.27 and 26,326.85 is: 39,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917.40 : 118,382.27 = 26,326.85 : x
  2. Step 2: Convert to fraction form
    78,917.40/118,382.27 = 26,326.85/x
  3. Step 3: Cross multiply
    78,917.40x = 118,382.27 × 26,326.85
  4. Step 4: Simplify right side
    78,917.40x = 3,116,631,541.40
  5. Step 5: Solve for x
    x = 3,116,631,541.40/78,917.40
  6. Step 6: Final answer
    x = 39,492.32

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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.