Home / 86,471.02-128,846.93-77,038.57

Finding the Fourth Proportional to 86,471.02, 128,846.93 and 77,038.57

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Solution

The fourth proportional to 86,471.02, 128,846.93 and 77,038.57 is: 114,792.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,471.02 : 128,846.93 = 77,038.57 : x
  2. Step 2: Convert to fraction form
    86,471.02/128,846.93 = 77,038.57/x
  3. Step 3: Cross multiply
    86,471.02x = 128,846.93 × 77,038.57
  4. Step 4: Simplify right side
    86,471.02x = 9,926,183,236.09
  5. Step 5: Solve for x
    x = 9,926,183,236.09/86,471.02
  6. Step 6: Final answer
    x = 114,792.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.