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Finding the Fourth Proportional to 75,128.85, 112,529.52 and 37,623.51

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Solution

The fourth proportional to 75,128.85, 112,529.52 and 37,623.51 is: 56,353.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.85 : 112,529.52 = 37,623.51 : x
  2. Step 2: Convert to fraction form
    75,128.85/112,529.52 = 37,623.51/x
  3. Step 3: Cross multiply
    75,128.85x = 112,529.52 × 37,623.51
  4. Step 4: Simplify right side
    75,128.85x = 4,233,755,521.02
  5. Step 5: Solve for x
    x = 4,233,755,521.02/75,128.85
  6. Step 6: Final answer
    x = 56,353.26

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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.