Home / 72,117.26-99,521.27-39,854.05

Finding the Fourth Proportional to 72,117.26, 99,521.27 and 39,854.05

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Solution

The fourth proportional to 72,117.26, 99,521.27 and 39,854.05 is: 54,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,117.26 : 99,521.27 = 39,854.05 : x
  2. Step 2: Convert to fraction form
    72,117.26/99,521.27 = 39,854.05/x
  3. Step 3: Cross multiply
    72,117.26x = 99,521.27 × 39,854.05
  4. Step 4: Simplify right side
    72,117.26x = 3,966,325,372.02
  5. Step 5: Solve for x
    x = 3,966,325,372.02/72,117.26
  6. Step 6: Final answer
    x = 54,998.28

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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.