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Finding the Fourth Proportional to 85,779.54, 118,374.08 and 47,538.29

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Solution

The fourth proportional to 85,779.54, 118,374.08 and 47,538.29 is: 65,601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.54 : 118,374.08 = 47,538.29 : x
  2. Step 2: Convert to fraction form
    85,779.54/118,374.08 = 47,538.29/x
  3. Step 3: Cross multiply
    85,779.54x = 118,374.08 × 47,538.29
  4. Step 4: Simplify right side
    85,779.54x = 5,627,301,401.77
  5. Step 5: Solve for x
    x = 5,627,301,401.77/85,779.54
  6. Step 6: Final answer
    x = 65,601.91

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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.