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Finding the Fourth Proportional to 53,284.60, 79,970.10 and 51,556.60

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Solution

The fourth proportional to 53,284.60, 79,970.10 and 51,556.60 is: 77,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,284.60 : 79,970.10 = 51,556.60 : x
  2. Step 2: Convert to fraction form
    53,284.60/79,970.10 = 51,556.60/x
  3. Step 3: Cross multiply
    53,284.60x = 79,970.10 × 51,556.60
  4. Step 4: Simplify right side
    53,284.60x = 4,122,986,457.66
  5. Step 5: Solve for x
    x = 4,122,986,457.66/53,284.60
  6. Step 6: Final answer
    x = 77,376.70

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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.