Home / 83,430.88-115,133.07-45,704.86

Finding the Fourth Proportional to 83,430.88, 115,133.07 and 45,704.86

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Solution

The fourth proportional to 83,430.88, 115,133.07 and 45,704.86 is: 63,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430.88 : 115,133.07 = 45,704.86 : x
  2. Step 2: Convert to fraction form
    83,430.88/115,133.07 = 45,704.86/x
  3. Step 3: Cross multiply
    83,430.88x = 115,133.07 × 45,704.86
  4. Step 4: Simplify right side
    83,430.88x = 5,262,140,845.72
  5. Step 5: Solve for x
    x = 5,262,140,845.72/83,430.88
  6. Step 6: Final answer
    x = 63,071.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.