Home / 78,009.14-107,618.43-45,727.40

Finding the Fourth Proportional to 78,009.14, 107,618.43 and 45,727.40

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Solution

The fourth proportional to 78,009.14, 107,618.43 and 45,727.40 is: 63,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009.14 : 107,618.43 = 45,727.40 : x
  2. Step 2: Convert to fraction form
    78,009.14/107,618.43 = 45,727.40/x
  3. Step 3: Cross multiply
    78,009.14x = 107,618.43 × 45,727.40
  4. Step 4: Simplify right side
    78,009.14x = 4,921,110,457.89
  5. Step 5: Solve for x
    x = 4,921,110,457.89/78,009.14
  6. Step 6: Final answer
    x = 63,083.77

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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.