Home / 77,140.40-106,455.12-43,606.40

Finding the Fourth Proportional to 77,140.40, 106,455.12 and 43,606.40

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Solution

The fourth proportional to 77,140.40, 106,455.12 and 43,606.40 is: 60,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,140.40 : 106,455.12 = 43,606.40 : x
  2. Step 2: Convert to fraction form
    77,140.40/106,455.12 = 43,606.40/x
  3. Step 3: Cross multiply
    77,140.40x = 106,455.12 × 43,606.40
  4. Step 4: Simplify right side
    77,140.40x = 4,642,124,544.77
  5. Step 5: Solve for x
    x = 4,642,124,544.77/77,140.40
  6. Step 6: Final answer
    x = 60,177.61

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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.