Home / 78,050.56-117,081.32-31,303.44

Finding the Fourth Proportional to 78,050.56, 117,081.32 and 31,303.44

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Solution

The fourth proportional to 78,050.56, 117,081.32 and 31,303.44 is: 46,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.56 : 117,081.32 = 31,303.44 : x
  2. Step 2: Convert to fraction form
    78,050.56/117,081.32 = 31,303.44/x
  3. Step 3: Cross multiply
    78,050.56x = 117,081.32 × 31,303.44
  4. Step 4: Simplify right side
    78,050.56x = 3,665,048,075.74
  5. Step 5: Solve for x
    x = 3,665,048,075.74/78,050.56
  6. Step 6: Final answer
    x = 46,957.36

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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.