Home / 86,451.20-129,690.21-36,531.51

Finding the Fourth Proportional to 86,451.20, 129,690.21 and 36,531.51

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Solution

The fourth proportional to 86,451.20, 129,690.21 and 36,531.51 is: 54,802.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,451.20 : 129,690.21 = 36,531.51 : x
  2. Step 2: Convert to fraction form
    86,451.20/129,690.21 = 36,531.51/x
  3. Step 3: Cross multiply
    86,451.20x = 129,690.21 × 36,531.51
  4. Step 4: Simplify right side
    86,451.20x = 4,737,778,854.17
  5. Step 5: Solve for x
    x = 4,737,778,854.17/86,451.20
  6. Step 6: Final answer
    x = 54,802.93

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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.