Home / 78,828.42-108,783.18-56,206.79

Finding the Fourth Proportional to 78,828.42, 108,783.18 and 56,206.79

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Solution

The fourth proportional to 78,828.42, 108,783.18 and 56,206.79 is: 77,565.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,828.42 : 108,783.18 = 56,206.79 : x
  2. Step 2: Convert to fraction form
    78,828.42/108,783.18 = 56,206.79/x
  3. Step 3: Cross multiply
    78,828.42x = 108,783.18 × 56,206.79
  4. Step 4: Simplify right side
    78,828.42x = 6,114,352,809.88
  5. Step 5: Solve for x
    x = 6,114,352,809.88/78,828.42
  6. Step 6: Final answer
    x = 77,565.34

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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.