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Finding the Fourth Proportional to 77,804.70, 116,707.05 and 70,915.65

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Solution

The fourth proportional to 77,804.70, 116,707.05 and 70,915.65 is: 106,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,804.70 : 116,707.05 = 70,915.65 : x
  2. Step 2: Convert to fraction form
    77,804.70/116,707.05 = 70,915.65/x
  3. Step 3: Cross multiply
    77,804.70x = 116,707.05 × 70,915.65
  4. Step 4: Simplify right side
    77,804.70x = 8,276,356,310.33
  5. Step 5: Solve for x
    x = 8,276,356,310.33/77,804.70
  6. Step 6: Final answer
    x = 106,373.48

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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.