Home / 51,270.68-76,916.28-21,688.40

Finding the Fourth Proportional to 51,270.68, 76,916.28 and 21,688.40

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Solution

The fourth proportional to 51,270.68, 76,916.28 and 21,688.40 is: 32,536.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,270.68 : 76,916.28 = 21,688.40 : x
  2. Step 2: Convert to fraction form
    51,270.68/76,916.28 = 21,688.40/x
  3. Step 3: Cross multiply
    51,270.68x = 76,916.28 × 21,688.40
  4. Step 4: Simplify right side
    51,270.68x = 1,668,191,047.15
  5. Step 5: Solve for x
    x = 1,668,191,047.15/51,270.68
  6. Step 6: Final answer
    x = 32,536.94

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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.