Home / 85,532.23-128,284.87-28,605.70

Finding the Fourth Proportional to 85,532.23, 128,284.87 and 28,605.70

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Solution

The fourth proportional to 85,532.23, 128,284.87 and 28,605.70 is: 42,904.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532.23 : 128,284.87 = 28,605.70 : x
  2. Step 2: Convert to fraction form
    85,532.23/128,284.87 = 28,605.70/x
  3. Step 3: Cross multiply
    85,532.23x = 128,284.87 × 28,605.70
  4. Step 4: Simplify right side
    85,532.23x = 3,669,678,398.49
  5. Step 5: Solve for x
    x = 3,669,678,398.49/85,532.23
  6. Step 6: Final answer
    x = 42,904.04

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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.