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Finding the Fourth Proportional to 52,430.36, 78,621.36 and 16,885.08

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Solution

The fourth proportional to 52,430.36, 78,621.36 and 16,885.08 is: 25,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,430.36 : 78,621.36 = 16,885.08 : x
  2. Step 2: Convert to fraction form
    52,430.36/78,621.36 = 16,885.08/x
  3. Step 3: Cross multiply
    52,430.36x = 78,621.36 × 16,885.08
  4. Step 4: Simplify right side
    52,430.36x = 1,327,528,158.60
  5. Step 5: Solve for x
    x = 1,327,528,158.60/52,430.36
  6. Step 6: Final answer
    x = 25,319.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.