Home / 77,430.64-116,145.60-51,129.10

Finding the Fourth Proportional to 77,430.64, 116,145.60 and 51,129.10

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Solution

The fourth proportional to 77,430.64, 116,145.60 and 51,129.10 is: 76,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,430.64 : 116,145.60 = 51,129.10 : x
  2. Step 2: Convert to fraction form
    77,430.64/116,145.60 = 51,129.10/x
  3. Step 3: Cross multiply
    77,430.64x = 116,145.60 × 51,129.10
  4. Step 4: Simplify right side
    77,430.64x = 5,938,419,996.96
  5. Step 5: Solve for x
    x = 5,938,419,996.96/77,430.64
  6. Step 6: Final answer
    x = 76,693.41

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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.