Home / 69,988.32-105,008.64-41,928.16

Finding the Fourth Proportional to 69,988.32, 105,008.64 and 41,928.16

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Solution

The fourth proportional to 69,988.32, 105,008.64 and 41,928.16 is: 62,907.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,988.32 : 105,008.64 = 41,928.16 : x
  2. Step 2: Convert to fraction form
    69,988.32/105,008.64 = 41,928.16/x
  3. Step 3: Cross multiply
    69,988.32x = 105,008.64 × 41,928.16
  4. Step 4: Simplify right side
    69,988.32x = 4,402,819,059.30
  5. Step 5: Solve for x
    x = 4,402,819,059.30/69,988.32
  6. Step 6: Final answer
    x = 62,907.91

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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.