Home / 75,474.51-113,215.64-19,315.11

Finding the Fourth Proportional to 75,474.51, 113,215.64 and 19,315.11

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Solution

The fourth proportional to 75,474.51, 113,215.64 and 19,315.11 is: 28,973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,474.51 : 113,215.64 = 19,315.11 : x
  2. Step 2: Convert to fraction form
    75,474.51/113,215.64 = 19,315.11/x
  3. Step 3: Cross multiply
    75,474.51x = 113,215.64 × 19,315.11
  4. Step 4: Simplify right side
    75,474.51x = 2,186,772,443.74
  5. Step 5: Solve for x
    x = 2,186,772,443.74/75,474.51
  6. Step 6: Final answer
    x = 28,973.66

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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.