Home / 78,403.02-117,837.81-36,879.18

Finding the Fourth Proportional to 78,403.02, 117,837.81 and 36,879.18

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Solution

The fourth proportional to 78,403.02, 117,837.81 and 36,879.18 is: 55,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,403.02 : 117,837.81 = 36,879.18 : x
  2. Step 2: Convert to fraction form
    78,403.02/117,837.81 = 36,879.18/x
  3. Step 3: Cross multiply
    78,403.02x = 117,837.81 × 36,879.18
  4. Step 4: Simplify right side
    78,403.02x = 4,345,761,805.80
  5. Step 5: Solve for x
    x = 4,345,761,805.80/78,403.02
  6. Step 6: Final answer
    x = 55,428.50

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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.