Home / 53,715.40-80,573.10-30,387.40

Finding the Fourth Proportional to 53,715.40, 80,573.10 and 30,387.40

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Solution

The fourth proportional to 53,715.40, 80,573.10 and 30,387.40 is: 45,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,715.40 : 80,573.10 = 30,387.40 : x
  2. Step 2: Convert to fraction form
    53,715.40/80,573.10 = 30,387.40/x
  3. Step 3: Cross multiply
    53,715.40x = 80,573.10 × 30,387.40
  4. Step 4: Simplify right side
    53,715.40x = 2,448,407,018.94
  5. Step 5: Solve for x
    x = 2,448,407,018.94/53,715.40
  6. Step 6: Final answer
    x = 45,581.10

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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.