Home / 91,590.56-137,405.52-28,409.36

Finding the Fourth Proportional to 91,590.56, 137,405.52 and 28,409.36

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Solution

The fourth proportional to 91,590.56, 137,405.52 and 28,409.36 is: 42,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,590.56 : 137,405.52 = 28,409.36 : x
  2. Step 2: Convert to fraction form
    91,590.56/137,405.52 = 28,409.36/x
  3. Step 3: Cross multiply
    91,590.56x = 137,405.52 × 28,409.36
  4. Step 4: Simplify right side
    91,590.56x = 3,903,602,883.67
  5. Step 5: Solve for x
    x = 3,903,602,883.67/91,590.56
  6. Step 6: Final answer
    x = 42,620.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.