Home / 90,885.40-136,004.10-57,621.40

Finding the Fourth Proportional to 90,885.40, 136,004.10 and 57,621.40

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Solution

The fourth proportional to 90,885.40, 136,004.10 and 57,621.40 is: 86,226.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,885.40 : 136,004.10 = 57,621.40 : x
  2. Step 2: Convert to fraction form
    90,885.40/136,004.10 = 57,621.40/x
  3. Step 3: Cross multiply
    90,885.40x = 136,004.10 × 57,621.40
  4. Step 4: Simplify right side
    90,885.40x = 7,836,746,647.74
  5. Step 5: Solve for x
    x = 7,836,746,647.74/90,885.40
  6. Step 6: Final answer
    x = 86,226.68

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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.