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Finding the Fourth Proportional to 56,656.45, 85,050.15 and 30,412.45

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Solution

The fourth proportional to 56,656.45, 85,050.15 and 30,412.45 is: 45,653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,656.45 : 85,050.15 = 30,412.45 : x
  2. Step 2: Convert to fraction form
    56,656.45/85,050.15 = 30,412.45/x
  3. Step 3: Cross multiply
    56,656.45x = 85,050.15 × 30,412.45
  4. Step 4: Simplify right side
    56,656.45x = 2,586,583,434.37
  5. Step 5: Solve for x
    x = 2,586,583,434.37/56,656.45
  6. Step 6: Final answer
    x = 45,653.82

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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.