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Finding the Fourth Proportional to 53,210.70, 79,801.65 and 15,770.70

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Solution

The fourth proportional to 53,210.70, 79,801.65 and 15,770.70 is: 23,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,210.70 : 79,801.65 = 15,770.70 : x
  2. Step 2: Convert to fraction form
    53,210.70/79,801.65 = 15,770.70/x
  3. Step 3: Cross multiply
    53,210.70x = 79,801.65 × 15,770.70
  4. Step 4: Simplify right side
    53,210.70x = 1,258,527,881.66
  5. Step 5: Solve for x
    x = 1,258,527,881.66/53,210.70
  6. Step 6: Final answer
    x = 23,651.78

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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.