Home / 90,929.02-136,412.16-38,338.60

Finding the Fourth Proportional to 90,929.02, 136,412.16 and 38,338.60

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Solution

The fourth proportional to 90,929.02, 136,412.16 and 38,338.60 is: 57,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,929.02 : 136,412.16 = 38,338.60 : x
  2. Step 2: Convert to fraction form
    90,929.02/136,412.16 = 38,338.60/x
  3. Step 3: Cross multiply
    90,929.02x = 136,412.16 × 38,338.60
  4. Step 4: Simplify right side
    90,929.02x = 5,229,851,237.38
  5. Step 5: Solve for x
    x = 5,229,851,237.38/90,929.02
  6. Step 6: Final answer
    x = 57,515.76

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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.