Home / 90,620.12-136,013.20-48,547.70

Finding the Fourth Proportional to 90,620.12, 136,013.20 and 48,547.70

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Solution

The fourth proportional to 90,620.12, 136,013.20 and 48,547.70 is: 72,866.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,620.12 : 136,013.20 = 48,547.70 : x
  2. Step 2: Convert to fraction form
    90,620.12/136,013.20 = 48,547.70/x
  3. Step 3: Cross multiply
    90,620.12x = 136,013.20 × 48,547.70
  4. Step 4: Simplify right side
    90,620.12x = 6,603,128,029.64
  5. Step 5: Solve for x
    x = 6,603,128,029.64/90,620.12
  6. Step 6: Final answer
    x = 72,866.03

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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.