Home / 99,985.56-137,959.50-59,686.44

Finding the Fourth Proportional to 99,985.56, 137,959.50 and 59,686.44

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Solution

The fourth proportional to 99,985.56, 137,959.50 and 59,686.44 is: 82,355.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,985.56 : 137,959.50 = 59,686.44 : x
  2. Step 2: Convert to fraction form
    99,985.56/137,959.50 = 59,686.44/x
  3. Step 3: Cross multiply
    99,985.56x = 137,959.50 × 59,686.44
  4. Step 4: Simplify right side
    99,985.56x = 8,234,311,419.18
  5. Step 5: Solve for x
    x = 8,234,311,419.18/99,985.56
  6. Step 6: Final answer
    x = 82,355.01

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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.