Home / 77,558.28-116,316.12-21,385.20

Finding the Fourth Proportional to 77,558.28, 116,316.12 and 21,385.20

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Solution

The fourth proportional to 77,558.28, 116,316.12 and 21,385.20 is: 32,071.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,558.28 : 116,316.12 = 21,385.20 : x
  2. Step 2: Convert to fraction form
    77,558.28/116,316.12 = 21,385.20/x
  3. Step 3: Cross multiply
    77,558.28x = 116,316.12 × 21,385.20
  4. Step 4: Simplify right side
    77,558.28x = 2,487,443,489.42
  5. Step 5: Solve for x
    x = 2,487,443,489.42/77,558.28
  6. Step 6: Final answer
    x = 32,071.93

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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.