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Finding the Fourth Proportional to 52,861.84, 72,950.35 and 28,987.10

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Solution

The fourth proportional to 52,861.84, 72,950.35 and 28,987.10 is: 40,002.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,861.84 : 72,950.35 = 28,987.10 : x
  2. Step 2: Convert to fraction form
    52,861.84/72,950.35 = 28,987.10/x
  3. Step 3: Cross multiply
    52,861.84x = 72,950.35 × 28,987.10
  4. Step 4: Simplify right side
    52,861.84x = 2,114,619,090.49
  5. Step 5: Solve for x
    x = 2,114,619,090.49/52,861.84
  6. Step 6: Final answer
    x = 40,002.75

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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.