Home / 78,024.40-117,036.60-77,246.80

Finding the Fourth Proportional to 78,024.40, 117,036.60 and 77,246.80

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Solution

The fourth proportional to 78,024.40, 117,036.60 and 77,246.80 is: 115,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,024.40 : 117,036.60 = 77,246.80 : x
  2. Step 2: Convert to fraction form
    78,024.40/117,036.60 = 77,246.80/x
  3. Step 3: Cross multiply
    78,024.40x = 117,036.60 × 77,246.80
  4. Step 4: Simplify right side
    78,024.40x = 9,040,702,832.88
  5. Step 5: Solve for x
    x = 9,040,702,832.88/78,024.40
  6. Step 6: Final answer
    x = 115,870.20

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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.