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Finding the Fourth Proportional to 63,378.24, 87,478 and 39,492.08

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Solution

The fourth proportional to 63,378.24, 87,478 and 39,492.08 is: 54,509.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,378.24 : 87,478 = 39,492.08 : x
  2. Step 2: Convert to fraction form
    63,378.24/87,478 = 39,492.08/x
  3. Step 3: Cross multiply
    63,378.24x = 87,478 × 39,492.08
  4. Step 4: Simplify right side
    63,378.24x = 3,454,688,174.24
  5. Step 5: Solve for x
    x = 3,454,688,174.24/63,378.24
  6. Step 6: Final answer
    x = 54,509.06

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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.