Home / 85,926.29-128,872.28-28,994.63

Finding the Fourth Proportional to 85,926.29, 128,872.28 and 28,994.63

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Solution

The fourth proportional to 85,926.29, 128,872.28 and 28,994.63 is: 43,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,926.29 : 128,872.28 = 28,994.63 : x
  2. Step 2: Convert to fraction form
    85,926.29/128,872.28 = 28,994.63/x
  3. Step 3: Cross multiply
    85,926.29x = 128,872.28 × 28,994.63
  4. Step 4: Simplify right side
    85,926.29x = 3,736,603,503.98
  5. Step 5: Solve for x
    x = 3,736,603,503.98/85,926.29
  6. Step 6: Final answer
    x = 43,486.15

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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.