Home / 57,115.28-78,821.99-31,624.45

Finding the Fourth Proportional to 57,115.28, 78,821.99 and 31,624.45

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Solution

The fourth proportional to 57,115.28, 78,821.99 and 31,624.45 is: 43,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,115.28 : 78,821.99 = 31,624.45 : x
  2. Step 2: Convert to fraction form
    57,115.28/78,821.99 = 31,624.45/x
  3. Step 3: Cross multiply
    57,115.28x = 78,821.99 × 31,624.45
  4. Step 4: Simplify right side
    57,115.28x = 2,492,701,840.98
  5. Step 5: Solve for x
    x = 2,492,701,840.98/57,115.28
  6. Step 6: Final answer
    x = 43,643.35

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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.