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Finding the Fourth Proportional to 45,010.80, 67,509.96 and 15,428.16

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Solution

The fourth proportional to 45,010.80, 67,509.96 and 15,428.16 is: 23,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,010.80 : 67,509.96 = 15,428.16 : x
  2. Step 2: Convert to fraction form
    45,010.80/67,509.96 = 15,428.16/x
  3. Step 3: Cross multiply
    45,010.80x = 67,509.96 × 15,428.16
  4. Step 4: Simplify right side
    45,010.80x = 1,041,554,464.47
  5. Step 5: Solve for x
    x = 1,041,554,464.47/45,010.80
  6. Step 6: Final answer
    x = 23,140.10

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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.