Home / 90,665.84-135,952-40,703.12

Finding the Fourth Proportional to 90,665.84, 135,952 and 40,703.12

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Solution

The fourth proportional to 90,665.84, 135,952 and 40,703.12 is: 61,033.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,665.84 : 135,952 = 40,703.12 : x
  2. Step 2: Convert to fraction form
    90,665.84/135,952 = 40,703.12/x
  3. Step 3: Cross multiply
    90,665.84x = 135,952 × 40,703.12
  4. Step 4: Simplify right side
    90,665.84x = 5,533,670,570.24
  5. Step 5: Solve for x
    x = 5,533,670,570.24/90,665.84
  6. Step 6: Final answer
    x = 61,033.69

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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.