Home / 90,284.36-135,154.38-48,605

Finding the Fourth Proportional to 90,284.36, 135,154.38 and 48,605

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Solution

The fourth proportional to 90,284.36, 135,154.38 and 48,605 is: 72,760.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,284.36 : 135,154.38 = 48,605 : x
  2. Step 2: Convert to fraction form
    90,284.36/135,154.38 = 48,605/x
  3. Step 3: Cross multiply
    90,284.36x = 135,154.38 × 48,605
  4. Step 4: Simplify right side
    90,284.36x = 6,569,178,639.90
  5. Step 5: Solve for x
    x = 6,569,178,639.90/90,284.36
  6. Step 6: Final answer
    x = 72,760.98

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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.