Home / 85,392.07-117,874.28-76,424.00

Finding the Fourth Proportional to 85,392.07, 117,874.28 and 76,424.00

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Solution

The fourth proportional to 85,392.07, 117,874.28 and 76,424.00 is: 105,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,392.07 : 117,874.28 = 76,424.00 : x
  2. Step 2: Convert to fraction form
    85,392.07/117,874.28 = 76,424.00/x
  3. Step 3: Cross multiply
    85,392.07x = 117,874.28 × 76,424.00
  4. Step 4: Simplify right side
    85,392.07x = 9,008,423,576.41
  5. Step 5: Solve for x
    x = 9,008,423,576.41/85,392.07
  6. Step 6: Final answer
    x = 105,494.85

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1.5x scale

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.