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Finding the Fourth Proportional to 55,485.81, 83,081.10 and 43,357.08

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Solution

The fourth proportional to 55,485.81, 83,081.10 and 43,357.08 is: 64,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,485.81 : 83,081.10 = 43,357.08 : x
  2. Step 2: Convert to fraction form
    55,485.81/83,081.10 = 43,357.08/x
  3. Step 3: Cross multiply
    55,485.81x = 83,081.10 × 43,357.08
  4. Step 4: Simplify right side
    55,485.81x = 3,602,153,899.19
  5. Step 5: Solve for x
    x = 3,602,153,899.19/55,485.81
  6. Step 6: Final answer
    x = 64,920.27

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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.