Home / 77,968.20-117,009.90-51,664.20

Finding the Fourth Proportional to 77,968.20, 117,009.90 and 51,664.20

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Solution

The fourth proportional to 77,968.20, 117,009.90 and 51,664.20 is: 77,534.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,968.20 : 117,009.90 = 51,664.20 : x
  2. Step 2: Convert to fraction form
    77,968.20/117,009.90 = 51,664.20/x
  3. Step 3: Cross multiply
    77,968.20x = 117,009.90 × 51,664.20
  4. Step 4: Simplify right side
    77,968.20x = 6,045,222,875.58
  5. Step 5: Solve for x
    x = 6,045,222,875.58/77,968.20
  6. Step 6: Final answer
    x = 77,534.47

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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.