Home / 74,429.74-102,729.29-45,774.06

Finding the Fourth Proportional to 74,429.74, 102,729.29 and 45,774.06

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Solution

The fourth proportional to 74,429.74, 102,729.29 and 45,774.06 is: 63,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.74 : 102,729.29 = 45,774.06 : x
  2. Step 2: Convert to fraction form
    74,429.74/102,729.29 = 45,774.06/x
  3. Step 3: Cross multiply
    74,429.74x = 102,729.29 × 45,774.06
  4. Step 4: Simplify right side
    74,429.74x = 4,702,336,776.70
  5. Step 5: Solve for x
    x = 4,702,336,776.70/74,429.74
  6. Step 6: Final answer
    x = 63,178.20

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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.