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Finding the Fourth Proportional to 63,099.72, 87,083.64 and 47,156.40

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Solution

The fourth proportional to 63,099.72, 87,083.64 and 47,156.40 is: 65,080.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,099.72 : 87,083.64 = 47,156.40 : x
  2. Step 2: Convert to fraction form
    63,099.72/87,083.64 = 47,156.40/x
  3. Step 3: Cross multiply
    63,099.72x = 87,083.64 × 47,156.40
  4. Step 4: Simplify right side
    63,099.72x = 4,106,550,961.30
  5. Step 5: Solve for x
    x = 4,106,550,961.30/63,099.72
  6. Step 6: Final answer
    x = 65,080.34

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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.