Home / 76,468.20-105,531.30-57,575.40

Finding the Fourth Proportional to 76,468.20, 105,531.30 and 57,575.40

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Solution

The fourth proportional to 76,468.20, 105,531.30 and 57,575.40 is: 79,457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,468.20 : 105,531.30 = 57,575.40 : x
  2. Step 2: Convert to fraction form
    76,468.20/105,531.30 = 57,575.40/x
  3. Step 3: Cross multiply
    76,468.20x = 105,531.30 × 57,575.40
  4. Step 4: Simplify right side
    76,468.20x = 6,076,006,810.02
  5. Step 5: Solve for x
    x = 6,076,006,810.02/76,468.20
  6. Step 6: Final answer
    x = 79,457.96

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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.