Home / 52,135.20-78,202.08-12,692.40

Finding the Fourth Proportional to 52,135.20, 78,202.08 and 12,692.40

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Solution

The fourth proportional to 52,135.20, 78,202.08 and 12,692.40 is: 19,038.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,135.20 : 78,202.08 = 12,692.40 : x
  2. Step 2: Convert to fraction form
    52,135.20/78,202.08 = 12,692.40/x
  3. Step 3: Cross multiply
    52,135.20x = 78,202.08 × 12,692.40
  4. Step 4: Simplify right side
    52,135.20x = 992,572,080.19
  5. Step 5: Solve for x
    x = 992,572,080.19/52,135.20
  6. Step 6: Final answer
    x = 19,038.42

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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.