Home / 90,303.06-135,537.75-45,961.50

Finding the Fourth Proportional to 90,303.06, 135,537.75 and 45,961.50

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Solution

The fourth proportional to 90,303.06, 135,537.75 and 45,961.50 is: 68,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,303.06 : 135,537.75 = 45,961.50 : x
  2. Step 2: Convert to fraction form
    90,303.06/135,537.75 = 45,961.50/x
  3. Step 3: Cross multiply
    90,303.06x = 135,537.75 × 45,961.50
  4. Step 4: Simplify right side
    90,303.06x = 6,229,518,296.63
  5. Step 5: Solve for x
    x = 6,229,518,296.63/90,303.06
  6. Step 6: Final answer
    x = 68,984.58

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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.