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Finding the Fourth Proportional to 52,740.87, 72,779.60 and 28,862.93

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Solution

The fourth proportional to 52,740.87, 72,779.60 and 28,862.93 is: 39,829.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,740.87 : 72,779.60 = 28,862.93 : x
  2. Step 2: Convert to fraction form
    52,740.87/72,779.60 = 28,862.93/x
  3. Step 3: Cross multiply
    52,740.87x = 72,779.60 × 28,862.93
  4. Step 4: Simplify right side
    52,740.87x = 2,100,631,992.02
  5. Step 5: Solve for x
    x = 2,100,631,992.02/52,740.87
  6. Step 6: Final answer
    x = 39,829.30

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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.