Home / 55,389.26-76,437.10-30,238.76

Finding the Fourth Proportional to 55,389.26, 76,437.10 and 30,238.76

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Solution

The fourth proportional to 55,389.26, 76,437.10 and 30,238.76 is: 41,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,389.26 : 76,437.10 = 30,238.76 : x
  2. Step 2: Convert to fraction form
    55,389.26/76,437.10 = 30,238.76/x
  3. Step 3: Cross multiply
    55,389.26x = 76,437.10 × 30,238.76
  4. Step 4: Simplify right side
    55,389.26x = 2,311,363,122.00
  5. Step 5: Solve for x
    x = 2,311,363,122.00/55,389.26
  6. Step 6: Final answer
    x = 41,729.45

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Double scale
Find fourth proportional to 55,390.26, 76,438.48 and 30,239.76
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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.