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Finding the Fourth Proportional to 77,681.94, 116,525.42 and 21,522.59

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Solution

The fourth proportional to 77,681.94, 116,525.42 and 21,522.59 is: 32,284.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,681.94 : 116,525.42 = 21,522.59 : x
  2. Step 2: Convert to fraction form
    77,681.94/116,525.42 = 21,522.59/x
  3. Step 3: Cross multiply
    77,681.94x = 116,525.42 × 21,522.59
  4. Step 4: Simplify right side
    77,681.94x = 2,507,929,322.13
  5. Step 5: Solve for x
    x = 2,507,929,322.13/77,681.94
  6. Step 6: Final answer
    x = 32,284.59

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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.