Home / 74,856.77-111,712.26-66,869.58

Finding the Fourth Proportional to 74,856.77, 111,712.26 and 66,869.58

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Solution

The fourth proportional to 74,856.77, 111,712.26 and 66,869.58 is: 99,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,856.77 : 111,712.26 = 66,869.58 : x
  2. Step 2: Convert to fraction form
    74,856.77/111,712.26 = 66,869.58/x
  3. Step 3: Cross multiply
    74,856.77x = 111,712.26 × 66,869.58
  4. Step 4: Simplify right side
    74,856.77x = 7,470,152,368.01
  5. Step 5: Solve for x
    x = 7,470,152,368.01/74,856.77
  6. Step 6: Final answer
    x = 99,792.61

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1.5x scale

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.