Home / 85,037.60-117,513.72-63,779.96

Finding the Fourth Proportional to 85,037.60, 117,513.72 and 63,779.96

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Solution

The fourth proportional to 85,037.60, 117,513.72 and 63,779.96 is: 88,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,037.60 : 117,513.72 = 63,779.96 : x
  2. Step 2: Convert to fraction form
    85,037.60/117,513.72 = 63,779.96/x
  3. Step 3: Cross multiply
    85,037.60x = 117,513.72 × 63,779.96
  4. Step 4: Simplify right side
    85,037.60x = 7,495,020,361.05
  5. Step 5: Solve for x
    x = 7,495,020,361.05/85,037.60
  6. Step 6: Final answer
    x = 88,137.72

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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.