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Finding the Fourth Proportional to 75,273.48, 112,929.20 and 53,130.10

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Solution

The fourth proportional to 75,273.48, 112,929.20 and 53,130.10 is: 79,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,273.48 : 112,929.20 = 53,130.10 : x
  2. Step 2: Convert to fraction form
    75,273.48/112,929.20 = 53,130.10/x
  3. Step 3: Cross multiply
    75,273.48x = 112,929.20 × 53,130.10
  4. Step 4: Simplify right side
    75,273.48x = 5,999,939,688.92
  5. Step 5: Solve for x
    x = 5,999,939,688.92/75,273.48
  6. Step 6: Final answer
    x = 79,708.55

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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.