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Finding the Fourth Proportional to 52,185.89, 72,015.89 and 28,312.39

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Solution

The fourth proportional to 52,185.89, 72,015.89 and 28,312.39 is: 39,070.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,185.89 : 72,015.89 = 28,312.39 : x
  2. Step 2: Convert to fraction form
    52,185.89/72,015.89 = 28,312.39/x
  3. Step 3: Cross multiply
    52,185.89x = 72,015.89 × 28,312.39
  4. Step 4: Simplify right side
    52,185.89x = 2,038,941,912.34
  5. Step 5: Solve for x
    x = 2,038,941,912.34/52,185.89
  6. Step 6: Final answer
    x = 39,070.75

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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.