Home / 53,411.84-80,117.65-20,139.37

Finding the Fourth Proportional to 53,411.84, 80,117.65 and 20,139.37

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Solution

The fourth proportional to 53,411.84, 80,117.65 and 20,139.37 is: 30,209.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,411.84 : 80,117.65 = 20,139.37 : x
  2. Step 2: Convert to fraction form
    53,411.84/80,117.65 = 20,139.37/x
  3. Step 3: Cross multiply
    53,411.84x = 80,117.65 × 20,139.37
  4. Step 4: Simplify right side
    53,411.84x = 1,613,518,596.29
  5. Step 5: Solve for x
    x = 1,613,518,596.29/53,411.84
  6. Step 6: Final answer
    x = 30,209.01

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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.