Home / 90,692.10-136,038.69-28,362.60

Finding the Fourth Proportional to 90,692.10, 136,038.69 and 28,362.60

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Solution

The fourth proportional to 90,692.10, 136,038.69 and 28,362.60 is: 42,544.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,692.10 : 136,038.69 = 28,362.60 : x
  2. Step 2: Convert to fraction form
    90,692.10/136,038.69 = 28,362.60/x
  3. Step 3: Cross multiply
    90,692.10x = 136,038.69 × 28,362.60
  4. Step 4: Simplify right side
    90,692.10x = 3,858,410,948.99
  5. Step 5: Solve for x
    x = 3,858,410,948.99/90,692.10
  6. Step 6: Final answer
    x = 42,544.07

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1.5x scale

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.