Home / 55,531-76,632.80-30,381.04

Finding the Fourth Proportional to 55,531, 76,632.80 and 30,381.04

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Solution

The fourth proportional to 55,531, 76,632.80 and 30,381.04 is: 41,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,531 : 76,632.80 = 30,381.04 : x
  2. Step 2: Convert to fraction form
    55,531/76,632.80 = 30,381.04/x
  3. Step 3: Cross multiply
    55,531x = 76,632.80 × 30,381.04
  4. Step 4: Simplify right side
    55,531x = 2,328,184,162.11
  5. Step 5: Solve for x
    x = 2,328,184,162.11/55,531
  6. Step 6: Final answer
    x = 41,925.85

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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.