Home / 86,078.16-129,109.95-29,903.85

Finding the Fourth Proportional to 86,078.16, 129,109.95 and 29,903.85

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Solution

The fourth proportional to 86,078.16, 129,109.95 and 29,903.85 is: 44,853.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,078.16 : 129,109.95 = 29,903.85 : x
  2. Step 2: Convert to fraction form
    86,078.16/129,109.95 = 29,903.85/x
  3. Step 3: Cross multiply
    86,078.16x = 129,109.95 × 29,903.85
  4. Step 4: Simplify right side
    86,078.16x = 3,860,884,578.31
  5. Step 5: Solve for x
    x = 3,860,884,578.31/86,078.16
  6. Step 6: Final answer
    x = 44,853.24

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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.