Home / 76,078.98-114,128.85-31,695.36

Finding the Fourth Proportional to 76,078.98, 114,128.85 and 31,695.36

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Solution

The fourth proportional to 76,078.98, 114,128.85 and 31,695.36 is: 47,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,078.98 : 114,128.85 = 31,695.36 : x
  2. Step 2: Convert to fraction form
    76,078.98/114,128.85 = 31,695.36/x
  3. Step 3: Cross multiply
    76,078.98x = 114,128.85 × 31,695.36
  4. Step 4: Simplify right side
    76,078.98x = 3,617,354,987.14
  5. Step 5: Solve for x
    x = 3,617,354,987.14/76,078.98
  6. Step 6: Final answer
    x = 47,547.36

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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.