Home / 87,779.79-121,137.21-49,541.45

Finding the Fourth Proportional to 87,779.79, 121,137.21 and 49,541.45

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Solution

The fourth proportional to 87,779.79, 121,137.21 and 49,541.45 is: 68,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.79 : 121,137.21 = 49,541.45 : x
  2. Step 2: Convert to fraction form
    87,779.79/121,137.21 = 49,541.45/x
  3. Step 3: Cross multiply
    87,779.79x = 121,137.21 × 49,541.45
  4. Step 4: Simplify right side
    87,779.79x = 6,001,312,426.67
  5. Step 5: Solve for x
    x = 6,001,312,426.67/87,779.79
  6. Step 6: Final answer
    x = 68,367.81

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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.