Home / 87,235.20-130,824-28,056.72

Finding the Fourth Proportional to 87,235.20, 130,824 and 28,056.72

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Solution

The fourth proportional to 87,235.20, 130,824 and 28,056.72 is: 42,075.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,235.20 : 130,824 = 28,056.72 : x
  2. Step 2: Convert to fraction form
    87,235.20/130,824 = 28,056.72/x
  3. Step 3: Cross multiply
    87,235.20x = 130,824 × 28,056.72
  4. Step 4: Simplify right side
    87,235.20x = 3,670,492,337.28
  5. Step 5: Solve for x
    x = 3,670,492,337.28/87,235.20
  6. Step 6: Final answer
    x = 42,075.82

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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.