Home / 42,714.72-64,085.78-20,529.70

Finding the Fourth Proportional to 42,714.72, 64,085.78 and 20,529.70

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Solution

The fourth proportional to 42,714.72, 64,085.78 and 20,529.70 is: 30,801.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,714.72 : 64,085.78 = 20,529.70 : x
  2. Step 2: Convert to fraction form
    42,714.72/64,085.78 = 20,529.70/x
  3. Step 3: Cross multiply
    42,714.72x = 64,085.78 × 20,529.70
  4. Step 4: Simplify right side
    42,714.72x = 1,315,661,728.78
  5. Step 5: Solve for x
    x = 1,315,661,728.78/42,714.72
  6. Step 6: Final answer
    x = 30,801.13

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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.