Home / 78,023.45-116,743.58-51,779.45

Finding the Fourth Proportional to 78,023.45, 116,743.58 and 51,779.45

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Solution

The fourth proportional to 78,023.45, 116,743.58 and 51,779.45 is: 77,475.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023.45 : 116,743.58 = 51,779.45 : x
  2. Step 2: Convert to fraction form
    78,023.45/116,743.58 = 51,779.45/x
  3. Step 3: Cross multiply
    78,023.45x = 116,743.58 × 51,779.45
  4. Step 4: Simplify right side
    78,023.45x = 6,044,918,104.53
  5. Step 5: Solve for x
    x = 6,044,918,104.53/78,023.45
  6. Step 6: Final answer
    x = 77,475.66

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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.