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Finding the Fourth Proportional to 85,362.72, 117,798.48 and 49,555.68

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Solution

The fourth proportional to 85,362.72, 117,798.48 and 49,555.68 is: 68,385.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,362.72 : 117,798.48 = 49,555.68 : x
  2. Step 2: Convert to fraction form
    85,362.72/117,798.48 = 49,555.68/x
  3. Step 3: Cross multiply
    85,362.72x = 117,798.48 × 49,555.68
  4. Step 4: Simplify right side
    85,362.72x = 5,837,583,779.37
  5. Step 5: Solve for x
    x = 5,837,583,779.37/85,362.72
  6. Step 6: Final answer
    x = 68,385.63

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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.