Home / 78,482.36-117,664.26-40,490.93

Finding the Fourth Proportional to 78,482.36, 117,664.26 and 40,490.93

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Solution

The fourth proportional to 78,482.36, 117,664.26 and 40,490.93 is: 60,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,482.36 : 117,664.26 = 40,490.93 : x
  2. Step 2: Convert to fraction form
    78,482.36/117,664.26 = 40,490.93/x
  3. Step 3: Cross multiply
    78,482.36x = 117,664.26 × 40,490.93
  4. Step 4: Simplify right side
    78,482.36x = 4,764,335,710.55
  5. Step 5: Solve for x
    x = 4,764,335,710.55/78,482.36
  6. Step 6: Final answer
    x = 60,705.81

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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.