Home / 99,435.89-137,224.64-56,417.19

Finding the Fourth Proportional to 99,435.89, 137,224.64 and 56,417.19

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Solution

The fourth proportional to 99,435.89, 137,224.64 and 56,417.19 is: 77,857.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,435.89 : 137,224.64 = 56,417.19 : x
  2. Step 2: Convert to fraction form
    99,435.89/137,224.64 = 56,417.19/x
  3. Step 3: Cross multiply
    99,435.89x = 137,224.64 × 56,417.19
  4. Step 4: Simplify right side
    99,435.89x = 7,741,828,618.05
  5. Step 5: Solve for x
    x = 7,741,828,618.05/99,435.89
  6. Step 6: Final answer
    x = 77,857.49

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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.