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Finding the Fourth Proportional to 53,113.96, 79,670.70 and 19,842.40

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Solution

The fourth proportional to 53,113.96, 79,670.70 and 19,842.40 is: 29,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,113.96 : 79,670.70 = 19,842.40 : x
  2. Step 2: Convert to fraction form
    53,113.96/79,670.70 = 19,842.40/x
  3. Step 3: Cross multiply
    53,113.96x = 79,670.70 × 19,842.40
  4. Step 4: Simplify right side
    53,113.96x = 1,580,857,897.68
  5. Step 5: Solve for x
    x = 1,580,857,897.68/53,113.96
  6. Step 6: Final answer
    x = 29,763.51

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1.5x scale

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.