Home / 66,420.51-99,190.50-58,372.35

Finding the Fourth Proportional to 66,420.51, 99,190.50 and 58,372.35

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Solution

The fourth proportional to 66,420.51, 99,190.50 and 58,372.35 is: 87,171.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.51 : 99,190.50 = 58,372.35 : x
  2. Step 2: Convert to fraction form
    66,420.51/99,190.50 = 58,372.35/x
  3. Step 3: Cross multiply
    66,420.51x = 99,190.50 × 58,372.35
  4. Step 4: Simplify right side
    66,420.51x = 5,789,982,582.68
  5. Step 5: Solve for x
    x = 5,789,982,582.68/66,420.51
  6. Step 6: Final answer
    x = 87,171.61

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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.