Home / 78,010.89-117,016.64-18,846.47

Finding the Fourth Proportional to 78,010.89, 117,016.64 and 18,846.47

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Solution

The fourth proportional to 78,010.89, 117,016.64 and 18,846.47 is: 28,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,010.89 : 117,016.64 = 18,846.47 : x
  2. Step 2: Convert to fraction form
    78,010.89/117,016.64 = 18,846.47/x
  3. Step 3: Cross multiply
    78,010.89x = 117,016.64 × 18,846.47
  4. Step 4: Simplify right side
    78,010.89x = 2,205,349,915.95
  5. Step 5: Solve for x
    x = 2,205,349,915.95/78,010.89
  6. Step 6: Final answer
    x = 28,269.77

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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.