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Finding the Fourth Proportional to 52,788.70, 72,848.40 and 28,916.22

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Solution

The fourth proportional to 52,788.70, 72,848.40 and 28,916.22 is: 39,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,788.70 : 72,848.40 = 28,916.22 : x
  2. Step 2: Convert to fraction form
    52,788.70/72,848.40 = 28,916.22/x
  3. Step 3: Cross multiply
    52,788.70x = 72,848.40 × 28,916.22
  4. Step 4: Simplify right side
    52,788.70x = 2,106,500,361.05
  5. Step 5: Solve for x
    x = 2,106,500,361.05/52,788.70
  6. Step 6: Final answer
    x = 39,904.38

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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.