Home / 105,400.83-145,451.25-57,653.76

Finding the Fourth Proportional to 105,400.83, 145,451.25 and 57,653.76

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Solution

The fourth proportional to 105,400.83, 145,451.25 and 57,653.76 is: 79,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,400.83 : 145,451.25 = 57,653.76 : x
  2. Step 2: Convert to fraction form
    105,400.83/145,451.25 = 57,653.76/x
  3. Step 3: Cross multiply
    105,400.83x = 145,451.25 × 57,653.76
  4. Step 4: Simplify right side
    105,400.83x = 8,385,811,459.20
  5. Step 5: Solve for x
    x = 8,385,811,459.20/105,400.83
  6. Step 6: Final answer
    x = 79,561.15

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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.