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Finding the Fourth Proportional to 52,672.16, 72,687.48 and 28,798.80

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Solution

The fourth proportional to 52,672.16, 72,687.48 and 28,798.80 is: 39,742.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,672.16 : 72,687.48 = 28,798.80 : x
  2. Step 2: Convert to fraction form
    52,672.16/72,687.48 = 28,798.80/x
  3. Step 3: Cross multiply
    52,672.16x = 72,687.48 × 28,798.80
  4. Step 4: Simplify right side
    52,672.16x = 2,093,312,199.02
  5. Step 5: Solve for x
    x = 2,093,312,199.02/52,672.16
  6. Step 6: Final answer
    x = 39,742.29

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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.