Home / 78,938.64-118,408.88-22,779.84

Finding the Fourth Proportional to 78,938.64, 118,408.88 and 22,779.84

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Solution

The fourth proportional to 78,938.64, 118,408.88 and 22,779.84 is: 34,170.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.64 : 118,408.88 = 22,779.84 : x
  2. Step 2: Convert to fraction form
    78,938.64/118,408.88 = 22,779.84/x
  3. Step 3: Cross multiply
    78,938.64x = 118,408.88 × 22,779.84
  4. Step 4: Simplify right side
    78,938.64x = 2,697,335,340.98
  5. Step 5: Solve for x
    x = 2,697,335,340.98/78,938.64
  6. Step 6: Final answer
    x = 34,170.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.