Home / 51,006.78-76,520.70-21,407.22

Finding the Fourth Proportional to 51,006.78, 76,520.70 and 21,407.22

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Solution

The fourth proportional to 51,006.78, 76,520.70 and 21,407.22 is: 32,115.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,006.78 : 76,520.70 = 21,407.22 : x
  2. Step 2: Convert to fraction form
    51,006.78/76,520.70 = 21,407.22/x
  3. Step 3: Cross multiply
    51,006.78x = 76,520.70 × 21,407.22
  4. Step 4: Simplify right side
    51,006.78x = 1,638,095,459.45
  5. Step 5: Solve for x
    x = 1,638,095,459.45/51,006.78
  6. Step 6: Final answer
    x = 32,115.25

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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.