Home / 45,715.40-68,573.10-28,128.20

Finding the Fourth Proportional to 45,715.40, 68,573.10 and 28,128.20

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Solution

The fourth proportional to 45,715.40, 68,573.10 and 28,128.20 is: 42,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,715.40 : 68,573.10 = 28,128.20 : x
  2. Step 2: Convert to fraction form
    45,715.40/68,573.10 = 28,128.20/x
  3. Step 3: Cross multiply
    45,715.40x = 68,573.10 × 28,128.20
  4. Step 4: Simplify right side
    45,715.40x = 1,928,837,871.42
  5. Step 5: Solve for x
    x = 1,928,837,871.42/45,715.40
  6. Step 6: Final answer
    x = 42,192.30

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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.