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Finding the Fourth Proportional to 45,602.88, 68,430.24 and 31,208.64

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Solution

The fourth proportional to 45,602.88, 68,430.24 and 31,208.64 is: 46,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,602.88 : 68,430.24 = 31,208.64 : x
  2. Step 2: Convert to fraction form
    45,602.88/68,430.24 = 31,208.64/x
  3. Step 3: Cross multiply
    45,602.88x = 68,430.24 × 31,208.64
  4. Step 4: Simplify right side
    45,602.88x = 2,135,614,725.27
  5. Step 5: Solve for x
    x = 2,135,614,725.27/45,602.88
  6. Step 6: Final answer
    x = 46,830.70

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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.