Home / 105,583.39-145,705.11-57,838.45

Finding the Fourth Proportional to 105,583.39, 145,705.11 and 57,838.45

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Solution

The fourth proportional to 105,583.39, 145,705.11 and 57,838.45 is: 79,817.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,583.39 : 145,705.11 = 57,838.45 : x
  2. Step 2: Convert to fraction form
    105,583.39/145,705.11 = 57,838.45/x
  3. Step 3: Cross multiply
    105,583.39x = 145,705.11 × 57,838.45
  4. Step 4: Simplify right side
    105,583.39x = 8,427,357,719.48
  5. Step 5: Solve for x
    x = 8,427,357,719.48/105,583.39
  6. Step 6: Final answer
    x = 79,817.08

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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.