Home / 88,009.12-121,426.05-53,982.64

Finding the Fourth Proportional to 88,009.12, 121,426.05 and 53,982.64

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Solution

The fourth proportional to 88,009.12, 121,426.05 and 53,982.64 is: 74,479.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,009.12 : 121,426.05 = 53,982.64 : x
  2. Step 2: Convert to fraction form
    88,009.12/121,426.05 = 53,982.64/x
  3. Step 3: Cross multiply
    88,009.12x = 121,426.05 × 53,982.64
  4. Step 4: Simplify right side
    88,009.12x = 6,554,898,743.77
  5. Step 5: Solve for x
    x = 6,554,898,743.77/88,009.12
  6. Step 6: Final answer
    x = 74,479.77

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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.