Home / 55,312.08-76,330.80-30,163.20

Finding the Fourth Proportional to 55,312.08, 76,330.80 and 30,163.20

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Solution

The fourth proportional to 55,312.08, 76,330.80 and 30,163.20 is: 41,625.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,312.08 : 76,330.80 = 30,163.20 : x
  2. Step 2: Convert to fraction form
    55,312.08/76,330.80 = 30,163.20/x
  3. Step 3: Cross multiply
    55,312.08x = 76,330.80 × 30,163.20
  4. Step 4: Simplify right side
    55,312.08x = 2,302,381,186.56
  5. Step 5: Solve for x
    x = 2,302,381,186.56/55,312.08
  6. Step 6: Final answer
    x = 41,625.29

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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.