Home / 78,313.28-107,990.64-46,476.03

Finding the Fourth Proportional to 78,313.28, 107,990.64 and 46,476.03

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Solution

The fourth proportional to 78,313.28, 107,990.64 and 46,476.03 is: 64,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.28 : 107,990.64 = 46,476.03 : x
  2. Step 2: Convert to fraction form
    78,313.28/107,990.64 = 46,476.03/x
  3. Step 3: Cross multiply
    78,313.28x = 107,990.64 × 46,476.03
  4. Step 4: Simplify right side
    78,313.28x = 5,018,976,152.59
  5. Step 5: Solve for x
    x = 5,018,976,152.59/78,313.28
  6. Step 6: Final answer
    x = 64,088.44

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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.