Home / 55,821.16-76,953.54-39,899.80

Finding the Fourth Proportional to 55,821.16, 76,953.54 and 39,899.80

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Solution

The fourth proportional to 55,821.16, 76,953.54 and 39,899.80 is: 55,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,821.16 : 76,953.54 = 39,899.80 : x
  2. Step 2: Convert to fraction form
    55,821.16/76,953.54 = 39,899.80/x
  3. Step 3: Cross multiply
    55,821.16x = 76,953.54 × 39,899.80
  4. Step 4: Simplify right side
    55,821.16x = 3,070,430,855.29
  5. Step 5: Solve for x
    x = 3,070,430,855.29/55,821.16
  6. Step 6: Final answer
    x = 55,004.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.