Home / 78,676.07-118,024.37-28,779.67

Finding the Fourth Proportional to 78,676.07, 118,024.37 and 28,779.67

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Solution

The fourth proportional to 78,676.07, 118,024.37 and 28,779.67 is: 43,173.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,676.07 : 118,024.37 = 28,779.67 : x
  2. Step 2: Convert to fraction form
    78,676.07/118,024.37 = 28,779.67/x
  3. Step 3: Cross multiply
    78,676.07x = 118,024.37 × 28,779.67
  4. Step 4: Simplify right side
    78,676.07x = 3,396,701,686.54
  5. Step 5: Solve for x
    x = 3,396,701,686.54/78,676.07
  6. Step 6: Final answer
    x = 43,173.25

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1.5x scale

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.