Home / 99,784.51-137,699.19-59,477.50

Finding the Fourth Proportional to 99,784.51, 137,699.19 and 59,477.50

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Solution

The fourth proportional to 99,784.51, 137,699.19 and 59,477.50 is: 82,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,784.51 : 137,699.19 = 59,477.50 : x
  2. Step 2: Convert to fraction form
    99,784.51/137,699.19 = 59,477.50/x
  3. Step 3: Cross multiply
    99,784.51x = 137,699.19 × 59,477.50
  4. Step 4: Simplify right side
    99,784.51x = 8,190,003,573.23
  5. Step 5: Solve for x
    x = 8,190,003,573.23/99,784.51
  6. Step 6: Final answer
    x = 82,076.90

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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.