Home / 77,430.86-116,146.01-51,129.35

Finding the Fourth Proportional to 77,430.86, 116,146.01 and 51,129.35

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Solution

The fourth proportional to 77,430.86, 116,146.01 and 51,129.35 is: 76,693.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,430.86 : 116,146.01 = 51,129.35 : x
  2. Step 2: Convert to fraction form
    77,430.86/116,146.01 = 51,129.35/x
  3. Step 3: Cross multiply
    77,430.86x = 116,146.01 × 51,129.35
  4. Step 4: Simplify right side
    77,430.86x = 5,938,469,740.75
  5. Step 5: Solve for x
    x = 5,938,469,740.75/77,430.86
  6. Step 6: Final answer
    x = 76,693.84

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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.