Home / 53,178.16-79,776-19,909.84

Finding the Fourth Proportional to 53,178.16, 79,776 and 19,909.84

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Solution

The fourth proportional to 53,178.16, 79,776 and 19,909.84 is: 29,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,178.16 : 79,776 = 19,909.84 : x
  2. Step 2: Convert to fraction form
    53,178.16/79,776 = 19,909.84/x
  3. Step 3: Cross multiply
    53,178.16x = 79,776 × 19,909.84
  4. Step 4: Simplify right side
    53,178.16x = 1,588,327,395.84
  5. Step 5: Solve for x
    x = 1,588,327,395.84/53,178.16
  6. Step 6: Final answer
    x = 29,868.04

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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.