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Finding the Fourth Proportional to 85,798.04, 128,521.86 and 44,157.56

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Solution

The fourth proportional to 85,798.04, 128,521.86 and 44,157.56 is: 66,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,798.04 : 128,521.86 = 44,157.56 : x
  2. Step 2: Convert to fraction form
    85,798.04/128,521.86 = 44,157.56/x
  3. Step 3: Cross multiply
    85,798.04x = 128,521.86 × 44,157.56
  4. Step 4: Simplify right side
    85,798.04x = 5,675,211,744.26
  5. Step 5: Solve for x
    x = 5,675,211,744.26/85,798.04
  6. Step 6: Final answer
    x = 66,146.17

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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.