Home / 91,921.07-126,899.52-61,864.40

Finding the Fourth Proportional to 91,921.07, 126,899.52 and 61,864.40

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Solution

The fourth proportional to 91,921.07, 126,899.52 and 61,864.40 is: 85,405.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,921.07 : 126,899.52 = 61,864.40 : x
  2. Step 2: Convert to fraction form
    91,921.07/126,899.52 = 61,864.40/x
  3. Step 3: Cross multiply
    91,921.07x = 126,899.52 × 61,864.40
  4. Step 4: Simplify right side
    91,921.07x = 7,850,562,665.09
  5. Step 5: Solve for x
    x = 7,850,562,665.09/91,921.07
  6. Step 6: Final answer
    x = 85,405.48

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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.