Home / 72,247.09-99,701.01-40,415.98

Finding the Fourth Proportional to 72,247.09, 99,701.01 and 40,415.98

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Solution

The fourth proportional to 72,247.09, 99,701.01 and 40,415.98 is: 55,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,247.09 : 99,701.01 = 40,415.98 : x
  2. Step 2: Convert to fraction form
    72,247.09/99,701.01 = 40,415.98/x
  3. Step 3: Cross multiply
    72,247.09x = 99,701.01 × 40,415.98
  4. Step 4: Simplify right side
    72,247.09x = 4,029,514,026.14
  5. Step 5: Solve for x
    x = 4,029,514,026.14/72,247.09
  6. Step 6: Final answer
    x = 55,774.07

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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.