Home / 90,090.12-124,324.35-49,254.39

Finding the Fourth Proportional to 90,090.12, 124,324.35 and 49,254.39

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Solution

The fourth proportional to 90,090.12, 124,324.35 and 49,254.39 is: 67,971.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,090.12 : 124,324.35 = 49,254.39 : x
  2. Step 2: Convert to fraction form
    90,090.12/124,324.35 = 49,254.39/x
  3. Step 3: Cross multiply
    90,090.12x = 124,324.35 × 49,254.39
  4. Step 4: Simplify right side
    90,090.12x = 6,123,520,021.40
  5. Step 5: Solve for x
    x = 6,123,520,021.40/90,090.12
  6. Step 6: Final answer
    x = 67,971.05

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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.