Home / 85,905.44-128,856.58-35,293.72

Finding the Fourth Proportional to 85,905.44, 128,856.58 and 35,293.72

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Solution

The fourth proportional to 85,905.44, 128,856.58 and 35,293.72 is: 52,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,905.44 : 128,856.58 = 35,293.72 : x
  2. Step 2: Convert to fraction form
    85,905.44/128,856.58 = 35,293.72/x
  3. Step 3: Cross multiply
    85,905.44x = 128,856.58 × 35,293.72
  4. Step 4: Simplify right side
    85,905.44x = 4,547,828,054.68
  5. Step 5: Solve for x
    x = 4,547,828,054.68/85,905.44
  6. Step 6: Final answer
    x = 52,939.93

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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.