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Finding the Fourth Proportional to 85,779.84, 118,418.88 and 58,932.48

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Solution

The fourth proportional to 85,779.84, 118,418.88 and 58,932.48 is: 81,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.84 : 118,418.88 = 58,932.48 : x
  2. Step 2: Convert to fraction form
    85,779.84/118,418.88 = 58,932.48/x
  3. Step 3: Cross multiply
    85,779.84x = 118,418.88 × 58,932.48
  4. Step 4: Simplify right side
    85,779.84x = 6,978,718,277.22
  5. Step 5: Solve for x
    x = 6,978,718,277.22/85,779.84
  6. Step 6: Final answer
    x = 81,356.16

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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.