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Finding the Fourth Proportional to 52,858.67, 72,946 and 28,985.39

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Solution

The fourth proportional to 52,858.67, 72,946 and 28,985.39 is: 40,000.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,858.67 : 72,946 = 28,985.39 : x
  2. Step 2: Convert to fraction form
    52,858.67/72,946 = 28,985.39/x
  3. Step 3: Cross multiply
    52,858.67x = 72,946 × 28,985.39
  4. Step 4: Simplify right side
    52,858.67x = 2,114,368,258.94
  5. Step 5: Solve for x
    x = 2,114,368,258.94/52,858.67
  6. Step 6: Final answer
    x = 40,000.41

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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.