Home / 42,075.60-63,102.56-12,486.40

Finding the Fourth Proportional to 42,075.60, 63,102.56 and 12,486.40

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Solution

The fourth proportional to 42,075.60, 63,102.56 and 12,486.40 is: 18,726.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,075.60 : 63,102.56 = 12,486.40 : x
  2. Step 2: Convert to fraction form
    42,075.60/63,102.56 = 12,486.40/x
  3. Step 3: Cross multiply
    42,075.60x = 63,102.56 × 12,486.40
  4. Step 4: Simplify right side
    42,075.60x = 787,923,805.18
  5. Step 5: Solve for x
    x = 787,923,805.18/42,075.60
  6. Step 6: Final answer
    x = 18,726.38

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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.