Home / 51,399.60-77,041.80-21,812.40

Finding the Fourth Proportional to 51,399.60, 77,041.80 and 21,812.40

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Solution

The fourth proportional to 51,399.60, 77,041.80 and 21,812.40 is: 32,694.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,399.60 : 77,041.80 = 21,812.40 : x
  2. Step 2: Convert to fraction form
    51,399.60/77,041.80 = 21,812.40/x
  3. Step 3: Cross multiply
    51,399.60x = 77,041.80 × 21,812.40
  4. Step 4: Simplify right side
    51,399.60x = 1,680,466,558.32
  5. Step 5: Solve for x
    x = 1,680,466,558.32/51,399.60
  6. Step 6: Final answer
    x = 32,694.16

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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.