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Finding the Fourth Proportional to 80,745.93, 111,313.89 and 56,798.28

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Solution

The fourth proportional to 80,745.93, 111,313.89 and 56,798.28 is: 78,300.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,745.93 : 111,313.89 = 56,798.28 : x
  2. Step 2: Convert to fraction form
    80,745.93/111,313.89 = 56,798.28/x
  3. Step 3: Cross multiply
    80,745.93x = 111,313.89 × 56,798.28
  4. Step 4: Simplify right side
    80,745.93x = 6,322,437,492.11
  5. Step 5: Solve for x
    x = 6,322,437,492.11/80,745.93
  6. Step 6: Final answer
    x = 78,300.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.