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Finding the Fourth Proportional to 52,134.80, 71,946.12 and 28,261.40

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Solution

The fourth proportional to 52,134.80, 71,946.12 and 28,261.40 is: 39,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,134.80 : 71,946.12 = 28,261.40 : x
  2. Step 2: Convert to fraction form
    52,134.80/71,946.12 = 28,261.40/x
  3. Step 3: Cross multiply
    52,134.80x = 71,946.12 × 28,261.40
  4. Step 4: Simplify right side
    52,134.80x = 2,033,298,075.77
  5. Step 5: Solve for x
    x = 2,033,298,075.77/52,134.80
  6. Step 6: Final answer
    x = 39,000.78

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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.