Home / 74,786.95-112,177.32-30,412

Finding the Fourth Proportional to 74,786.95, 112,177.32 and 30,412

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Solution

The fourth proportional to 74,786.95, 112,177.32 and 30,412 is: 45,616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,786.95 : 112,177.32 = 30,412 : x
  2. Step 2: Convert to fraction form
    74,786.95/112,177.32 = 30,412/x
  3. Step 3: Cross multiply
    74,786.95x = 112,177.32 × 30,412
  4. Step 4: Simplify right side
    74,786.95x = 3,411,536,655.84
  5. Step 5: Solve for x
    x = 3,411,536,655.84/74,786.95
  6. Step 6: Final answer
    x = 45,616.74

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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.