Home / 90,438,874.68-135,718,784.19-38,635,583.64

Finding the Fourth Proportional to 90,438,874.68, 135,718,784.19 and 38,635,583.64

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Solution

The fourth proportional to 90,438,874.68, 135,718,784.19 and 38,635,583.64 is: 57,979,209.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,438,874.68 : 135,718,784.19 = 38,635,583.64 : x
  2. Step 2: Convert to fraction form
    90,438,874.68/135,718,784.19 = 38,635,583.64/x
  3. Step 3: Cross multiply
    90,438,874.68x = 135,718,784.19 × 38,635,583.64
  4. Step 4: Simplify right side
    90,438,874.68x = 5,243,574,438,091,855
  5. Step 5: Solve for x
    x = 5,243,574,438,091,855/90,438,874.68
  6. Step 6: Final answer
    x = 57,979,209.24

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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.