Home / 74,619.90-111,856.95-66,746.70

Finding the Fourth Proportional to 74,619.90, 111,856.95 and 66,746.70

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Solution

The fourth proportional to 74,619.90, 111,856.95 and 66,746.70 is: 100,054.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,619.90 : 111,856.95 = 66,746.70 : x
  2. Step 2: Convert to fraction form
    74,619.90/111,856.95 = 66,746.70/x
  3. Step 3: Cross multiply
    74,619.90x = 111,856.95 × 66,746.70
  4. Step 4: Simplify right side
    74,619.90x = 7,466,082,284.57
  5. Step 5: Solve for x
    x = 7,466,082,284.57/74,619.90
  6. Step 6: Final answer
    x = 100,054.84

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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.