Home / 89,628.16-123,692.16-51,915.52

Finding the Fourth Proportional to 89,628.16, 123,692.16 and 51,915.52

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Solution

The fourth proportional to 89,628.16, 123,692.16 and 51,915.52 is: 71,646.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,628.16 : 123,692.16 = 51,915.52 : x
  2. Step 2: Convert to fraction form
    89,628.16/123,692.16 = 51,915.52/x
  3. Step 3: Cross multiply
    89,628.16x = 123,692.16 × 51,915.52
  4. Step 4: Simplify right side
    89,628.16x = 6,421,542,806.32
  5. Step 5: Solve for x
    x = 6,421,542,806.32/89,628.16
  6. Step 6: Final answer
    x = 71,646.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.