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Finding the Fourth Proportional to 56,714.40, 85,079.70 and 19,276.20

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Solution

The fourth proportional to 56,714.40, 85,079.70 and 19,276.20 is: 28,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,714.40 : 85,079.70 = 19,276.20 : x
  2. Step 2: Convert to fraction form
    56,714.40/85,079.70 = 19,276.20/x
  3. Step 3: Cross multiply
    56,714.40x = 85,079.70 × 19,276.20
  4. Step 4: Simplify right side
    56,714.40x = 1,640,013,313.14
  5. Step 5: Solve for x
    x = 1,640,013,313.14/56,714.40
  6. Step 6: Final answer
    x = 28,917.05

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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.