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Finding the Fourth Proportional to 105,480.79, 145,563.24 and 57,733.72

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Solution

The fourth proportional to 105,480.79, 145,563.24 and 57,733.72 is: 79,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,480.79 : 145,563.24 = 57,733.72 : x
  2. Step 2: Convert to fraction form
    105,480.79/145,563.24 = 57,733.72/x
  3. Step 3: Cross multiply
    105,480.79x = 145,563.24 × 57,733.72
  4. Step 4: Simplify right side
    105,480.79x = 8,403,907,193.05
  5. Step 5: Solve for x
    x = 8,403,907,193.05/105,480.79
  6. Step 6: Final answer
    x = 79,672.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.