Home / 77,261.16-115,882.74-21,099

Finding the Fourth Proportional to 77,261.16, 115,882.74 and 21,099

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Solution

The fourth proportional to 77,261.16, 115,882.74 and 21,099 is: 31,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,261.16 : 115,882.74 = 21,099 : x
  2. Step 2: Convert to fraction form
    77,261.16/115,882.74 = 21,099/x
  3. Step 3: Cross multiply
    77,261.16x = 115,882.74 × 21,099
  4. Step 4: Simplify right side
    77,261.16x = 2,445,009,931.26
  5. Step 5: Solve for x
    x = 2,445,009,931.26/77,261.16
  6. Step 6: Final answer
    x = 31,646.04

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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.