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Finding the Fourth Proportional to 78,697.35, 118,000.74 and 46,688.76

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Solution

The fourth proportional to 78,697.35, 118,000.74 and 46,688.76 is: 70,006.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697.35 : 118,000.74 = 46,688.76 : x
  2. Step 2: Convert to fraction form
    78,697.35/118,000.74 = 46,688.76/x
  3. Step 3: Cross multiply
    78,697.35x = 118,000.74 × 46,688.76
  4. Step 4: Simplify right side
    78,697.35x = 5,509,308,229.68
  5. Step 5: Solve for x
    x = 5,509,308,229.68/78,697.35
  6. Step 6: Final answer
    x = 70,006.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.