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Finding the Fourth Proportional to 77,289.59, 115,951.01 and 23,980.50

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Solution

The fourth proportional to 77,289.59, 115,951.01 and 23,980.50 is: 35,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,289.59 : 115,951.01 = 23,980.50 : x
  2. Step 2: Convert to fraction form
    77,289.59/115,951.01 = 23,980.50/x
  3. Step 3: Cross multiply
    77,289.59x = 115,951.01 × 23,980.50
  4. Step 4: Simplify right side
    77,289.59x = 2,780,563,075.40
  5. Step 5: Solve for x
    x = 2,780,563,075.40/77,289.59
  6. Step 6: Final answer
    x = 35,975.91

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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.