Home / 81,457.05-112,292.94-57,184.10

Finding the Fourth Proportional to 81,457.05, 112,292.94 and 57,184.10

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Solution

The fourth proportional to 81,457.05, 112,292.94 and 57,184.10 is: 78,831.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,457.05 : 112,292.94 = 57,184.10 : x
  2. Step 2: Convert to fraction form
    81,457.05/112,292.94 = 57,184.10/x
  3. Step 3: Cross multiply
    81,457.05x = 112,292.94 × 57,184.10
  4. Step 4: Simplify right side
    81,457.05x = 6,421,370,710.25
  5. Step 5: Solve for x
    x = 6,421,370,710.25/81,457.05
  6. Step 6: Final answer
    x = 78,831.37

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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.