Home / 42,725.36-64,128.26-21,680.50

Finding the Fourth Proportional to 42,725.36, 64,128.26 and 21,680.50

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Solution

The fourth proportional to 42,725.36, 64,128.26 and 21,680.50 is: 32,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,725.36 : 64,128.26 = 21,680.50 : x
  2. Step 2: Convert to fraction form
    42,725.36/64,128.26 = 21,680.50/x
  3. Step 3: Cross multiply
    42,725.36x = 64,128.26 × 21,680.50
  4. Step 4: Simplify right side
    42,725.36x = 1,390,332,740.93
  5. Step 5: Solve for x
    x = 1,390,332,740.93/42,725.36
  6. Step 6: Final answer
    x = 32,541.16

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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.