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Finding the Fourth Proportional to 86,417.80, 129,626.70 and 73,733.20

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Solution

The fourth proportional to 86,417.80, 129,626.70 and 73,733.20 is: 110,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,417.80 : 129,626.70 = 73,733.20 : x
  2. Step 2: Convert to fraction form
    86,417.80/129,626.70 = 73,733.20/x
  3. Step 3: Cross multiply
    86,417.80x = 129,626.70 × 73,733.20
  4. Step 4: Simplify right side
    86,417.80x = 9,557,791,396.44
  5. Step 5: Solve for x
    x = 9,557,791,396.44/86,417.80
  6. Step 6: Final answer
    x = 110,599.80

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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.