Home / 66,820.48-92,002.40-56,728

Finding the Fourth Proportional to 66,820.48, 92,002.40 and 56,728

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Solution

The fourth proportional to 66,820.48, 92,002.40 and 56,728 is: 78,106.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,820.48 : 92,002.40 = 56,728 : x
  2. Step 2: Convert to fraction form
    66,820.48/92,002.40 = 56,728/x
  3. Step 3: Cross multiply
    66,820.48x = 92,002.40 × 56,728
  4. Step 4: Simplify right side
    66,820.48x = 5,219,112,147.20
  5. Step 5: Solve for x
    x = 5,219,112,147.20/66,820.48
  6. Step 6: Final answer
    x = 78,106.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.