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Finding the Fourth Proportional to 85,347.82, 117,779.90 and 47,622.07

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Solution

The fourth proportional to 85,347.82, 117,779.90 and 47,622.07 is: 65,718.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,347.82 : 117,779.90 = 47,622.07 : x
  2. Step 2: Convert to fraction form
    85,347.82/117,779.90 = 47,622.07/x
  3. Step 3: Cross multiply
    85,347.82x = 117,779.90 × 47,622.07
  4. Step 4: Simplify right side
    85,347.82x = 5,608,922,642.39
  5. Step 5: Solve for x
    x = 5,608,922,642.39/85,347.82
  6. Step 6: Final answer
    x = 65,718.41

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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.