Home / 45,012.78-67,520.34-15,430.50

Finding the Fourth Proportional to 45,012.78, 67,520.34 and 15,430.50

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Solution

The fourth proportional to 45,012.78, 67,520.34 and 15,430.50 is: 23,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,012.78 : 67,520.34 = 15,430.50 : x
  2. Step 2: Convert to fraction form
    45,012.78/67,520.34 = 15,430.50/x
  3. Step 3: Cross multiply
    45,012.78x = 67,520.34 × 15,430.50
  4. Step 4: Simplify right side
    45,012.78x = 1,041,872,606.37
  5. Step 5: Solve for x
    x = 1,041,872,606.37/45,012.78
  6. Step 6: Final answer
    x = 23,146.15

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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.