Home / 78,813.76-108,779.18-48,192.09

Finding the Fourth Proportional to 78,813.76, 108,779.18 and 48,192.09

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Solution

The fourth proportional to 78,813.76, 108,779.18 and 48,192.09 is: 66,514.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,813.76 : 108,779.18 = 48,192.09 : x
  2. Step 2: Convert to fraction form
    78,813.76/108,779.18 = 48,192.09/x
  3. Step 3: Cross multiply
    78,813.76x = 108,779.18 × 48,192.09
  4. Step 4: Simplify right side
    78,813.76x = 5,242,296,032.69
  5. Step 5: Solve for x
    x = 5,242,296,032.69/78,813.76
  6. Step 6: Final answer
    x = 66,514.98

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1.5x scale

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.