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Finding the Fourth Proportional to 51,102.40, 70,520.56 and 28,746.40

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Solution

The fourth proportional to 51,102.40, 70,520.56 and 28,746.40 is: 39,669.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,102.40 : 70,520.56 = 28,746.40 : x
  2. Step 2: Convert to fraction form
    51,102.40/70,520.56 = 28,746.40/x
  3. Step 3: Cross multiply
    51,102.40x = 70,520.56 × 28,746.40
  4. Step 4: Simplify right side
    51,102.40x = 2,027,212,225.98
  5. Step 5: Solve for x
    x = 2,027,212,225.98/51,102.40
  6. Step 6: Final answer
    x = 39,669.61

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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.