Home / 90,800.63-136,222.79-28,471.13

Finding the Fourth Proportional to 90,800.63, 136,222.79 and 28,471.13

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Solution

The fourth proportional to 90,800.63, 136,222.79 and 28,471.13 is: 42,713.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,800.63 : 136,222.79 = 28,471.13 : x
  2. Step 2: Convert to fraction form
    90,800.63/136,222.79 = 28,471.13/x
  3. Step 3: Cross multiply
    90,800.63x = 136,222.79 × 28,471.13
  4. Step 4: Simplify right side
    90,800.63x = 3,878,415,939.58
  5. Step 5: Solve for x
    x = 3,878,415,939.58/90,800.63
  6. Step 6: Final answer
    x = 42,713.54

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1.5x scale

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.