Home / 92,769.36-128,010.90-51,935.70

Finding the Fourth Proportional to 92,769.36, 128,010.90 and 51,935.70

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Solution

The fourth proportional to 92,769.36, 128,010.90 and 51,935.70 is: 71,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,769.36 : 128,010.90 = 51,935.70 : x
  2. Step 2: Convert to fraction form
    92,769.36/128,010.90 = 51,935.70/x
  3. Step 3: Cross multiply
    92,769.36x = 128,010.90 × 51,935.70
  4. Step 4: Simplify right side
    92,769.36x = 6,648,335,699.13
  5. Step 5: Solve for x
    x = 6,648,335,699.13/92,769.36
  6. Step 6: Final answer
    x = 71,665.21

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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.