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Finding the Fourth Proportional to 52,252.60, 78,378.90 and 12,810.10

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Solution

The fourth proportional to 52,252.60, 78,378.90 and 12,810.10 is: 19,215.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,252.60 : 78,378.90 = 12,810.10 : x
  2. Step 2: Convert to fraction form
    52,252.60/78,378.90 = 12,810.10/x
  3. Step 3: Cross multiply
    52,252.60x = 78,378.90 × 12,810.10
  4. Step 4: Simplify right side
    52,252.60x = 1,004,041,546.89
  5. Step 5: Solve for x
    x = 1,004,041,546.89/52,252.60
  6. Step 6: Final answer
    x = 19,215.15

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1.5x scale

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.