Home / 53,315.68-79,973.12-21,718.32

Finding the Fourth Proportional to 53,315.68, 79,973.12 and 21,718.32

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Solution

The fourth proportional to 53,315.68, 79,973.12 and 21,718.32 is: 32,577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,315.68 : 79,973.12 = 21,718.32 : x
  2. Step 2: Convert to fraction form
    53,315.68/79,973.12 = 21,718.32/x
  3. Step 3: Cross multiply
    53,315.68x = 79,973.12 × 21,718.32
  4. Step 4: Simplify right side
    53,315.68x = 1,736,881,811.56
  5. Step 5: Solve for x
    x = 1,736,881,811.56/53,315.68
  6. Step 6: Final answer
    x = 32,577.32

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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.