Home / 105,531.20-145,633.02-57,784.52

Finding the Fourth Proportional to 105,531.20, 145,633.02 and 57,784.52

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Solution

The fourth proportional to 105,531.20, 145,633.02 and 57,784.52 is: 79,742.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,531.20 : 145,633.02 = 57,784.52 : x
  2. Step 2: Convert to fraction form
    105,531.20/145,633.02 = 57,784.52/x
  3. Step 3: Cross multiply
    105,531.20x = 145,633.02 × 57,784.52
  4. Step 4: Simplify right side
    105,531.20x = 8,415,334,156.85
  5. Step 5: Solve for x
    x = 8,415,334,156.85/105,531.20
  6. Step 6: Final answer
    x = 79,742.62

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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.