Home / 74,122.02-102,287.63-40,129.61

Finding the Fourth Proportional to 74,122.02, 102,287.63 and 40,129.61

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Solution

The fourth proportional to 74,122.02, 102,287.63 and 40,129.61 is: 55,378.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,122.02 : 102,287.63 = 40,129.61 : x
  2. Step 2: Convert to fraction form
    74,122.02/102,287.63 = 40,129.61/x
  3. Step 3: Cross multiply
    74,122.02x = 102,287.63 × 40,129.61
  4. Step 4: Simplify right side
    74,122.02x = 4,104,762,699.72
  5. Step 5: Solve for x
    x = 4,104,762,699.72/74,122.02
  6. Step 6: Final answer
    x = 55,378.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.