Home / 78,684.04-108,582.60-42,874.36

Finding the Fourth Proportional to 78,684.04, 108,582.60 and 42,874.36

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Solution

The fourth proportional to 78,684.04, 108,582.60 and 42,874.36 is: 59,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.04 : 108,582.60 = 42,874.36 : x
  2. Step 2: Convert to fraction form
    78,684.04/108,582.60 = 42,874.36/x
  3. Step 3: Cross multiply
    78,684.04x = 108,582.60 × 42,874.36
  4. Step 4: Simplify right side
    78,684.04x = 4,655,409,482.14
  5. Step 5: Solve for x
    x = 4,655,409,482.14/78,684.04
  6. Step 6: Final answer
    x = 59,165.87

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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.