Home / 76,938.88-115,407.12-39,477.34

Finding the Fourth Proportional to 76,938.88, 115,407.12 and 39,477.34

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Solution

The fourth proportional to 76,938.88, 115,407.12 and 39,477.34 is: 59,215.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,938.88 : 115,407.12 = 39,477.34 : x
  2. Step 2: Convert to fraction form
    76,938.88/115,407.12 = 39,477.34/x
  3. Step 3: Cross multiply
    76,938.88x = 115,407.12 × 39,477.34
  4. Step 4: Simplify right side
    76,938.88x = 4,555,966,114.66
  5. Step 5: Solve for x
    x = 4,555,966,114.66/76,938.88
  6. Step 6: Final answer
    x = 59,215.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.