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Finding the Fourth Proportional to 93,761.88, 129,392.60 and 51,319.50

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Solution

The fourth proportional to 93,761.88, 129,392.60 and 51,319.50 is: 70,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,761.88 : 129,392.60 = 51,319.50 : x
  2. Step 2: Convert to fraction form
    93,761.88/129,392.60 = 51,319.50/x
  3. Step 3: Cross multiply
    93,761.88x = 129,392.60 × 51,319.50
  4. Step 4: Simplify right side
    93,761.88x = 6,640,363,535.70
  5. Step 5: Solve for x
    x = 6,640,363,535.70/93,761.88
  6. Step 6: Final answer
    x = 70,821.57

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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.