Home / 74,856.46-111,711.81-66,869.28

Finding the Fourth Proportional to 74,856.46, 111,711.81 and 66,869.28

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Solution

The fourth proportional to 74,856.46, 111,711.81 and 66,869.28 is: 99,792.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,856.46 : 111,711.81 = 66,869.28 : x
  2. Step 2: Convert to fraction form
    74,856.46/111,711.81 = 66,869.28/x
  3. Step 3: Cross multiply
    74,856.46x = 111,711.81 × 66,869.28
  4. Step 4: Simplify right side
    74,856.46x = 7,470,088,051.44
  5. Step 5: Solve for x
    x = 7,470,088,051.44/74,856.46
  6. Step 6: Final answer
    x = 99,792.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.