Home / 99,856.06-137,783.13-56,833.05

Finding the Fourth Proportional to 99,856.06, 137,783.13 and 56,833.05

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Solution

The fourth proportional to 99,856.06, 137,783.13 and 56,833.05 is: 78,419.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856.06 : 137,783.13 = 56,833.05 : x
  2. Step 2: Convert to fraction form
    99,856.06/137,783.13 = 56,833.05/x
  3. Step 3: Cross multiply
    99,856.06x = 137,783.13 × 56,833.05
  4. Step 4: Simplify right side
    99,856.06x = 7,830,635,820.01
  5. Step 5: Solve for x
    x = 7,830,635,820.01/99,856.06
  6. Step 6: Final answer
    x = 78,419.24

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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.