Home / 66,412.20-99,618.30-56,389.80

Finding the Fourth Proportional to 66,412.20, 99,618.30 and 56,389.80

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Solution

The fourth proportional to 66,412.20, 99,618.30 and 56,389.80 is: 84,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,412.20 : 99,618.30 = 56,389.80 : x
  2. Step 2: Convert to fraction form
    66,412.20/99,618.30 = 56,389.80/x
  3. Step 3: Cross multiply
    66,412.20x = 99,618.30 × 56,389.80
  4. Step 4: Simplify right side
    66,412.20x = 5,617,456,013.34
  5. Step 5: Solve for x
    x = 5,617,456,013.34/66,412.20
  6. Step 6: Final answer
    x = 84,584.70

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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.