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Finding the Fourth Proportional to 60,139.50, 90,206.51 and 15,765.27

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Solution

The fourth proportional to 60,139.50, 90,206.51 and 15,765.27 is: 23,647.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,139.50 : 90,206.51 = 15,765.27 : x
  2. Step 2: Convert to fraction form
    60,139.50/90,206.51 = 15,765.27/x
  3. Step 3: Cross multiply
    60,139.50x = 90,206.51 × 15,765.27
  4. Step 4: Simplify right side
    60,139.50x = 1,422,129,907.08
  5. Step 5: Solve for x
    x = 1,422,129,907.08/60,139.50
  6. Step 6: Final answer
    x = 23,647.19

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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.