Home / 78,783.28-118,075.08-77,950

Finding the Fourth Proportional to 78,783.28, 118,075.08 and 77,950

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Solution

The fourth proportional to 78,783.28, 118,075.08 and 77,950 is: 116,826.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.28 : 118,075.08 = 77,950 : x
  2. Step 2: Convert to fraction form
    78,783.28/118,075.08 = 77,950/x
  3. Step 3: Cross multiply
    78,783.28x = 118,075.08 × 77,950
  4. Step 4: Simplify right side
    78,783.28x = 9,203,952,486
  5. Step 5: Solve for x
    x = 9,203,952,486/78,783.28
  6. Step 6: Final answer
    x = 116,826.22

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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.