Home / 93,891.20-129,567.12-55,128.38

Finding the Fourth Proportional to 93,891.20, 129,567.12 and 55,128.38

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Solution

The fourth proportional to 93,891.20, 129,567.12 and 55,128.38 is: 76,075.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,891.20 : 129,567.12 = 55,128.38 : x
  2. Step 2: Convert to fraction form
    93,891.20/129,567.12 = 55,128.38/x
  3. Step 3: Cross multiply
    93,891.20x = 129,567.12 × 55,128.38
  4. Step 4: Simplify right side
    93,891.20x = 7,142,825,426.87
  5. Step 5: Solve for x
    x = 7,142,825,426.87/93,891.20
  6. Step 6: Final answer
    x = 76,075.56

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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.