Home / 74,112.76-102,435.60-65,554.30

Finding the Fourth Proportional to 74,112.76, 102,435.60 and 65,554.30

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Solution

The fourth proportional to 74,112.76, 102,435.60 and 65,554.30 is: 90,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,112.76 : 102,435.60 = 65,554.30 : x
  2. Step 2: Convert to fraction form
    74,112.76/102,435.60 = 65,554.30/x
  3. Step 3: Cross multiply
    74,112.76x = 102,435.60 × 65,554.30
  4. Step 4: Simplify right side
    74,112.76x = 6,715,094,053.08
  5. Step 5: Solve for x
    x = 6,715,094,053.08/74,112.76
  6. Step 6: Final answer
    x = 90,606.45

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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.