Home / 105,455.50-145,523.92-57,710.86

Finding the Fourth Proportional to 105,455.50, 145,523.92 and 57,710.86

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Solution

The fourth proportional to 105,455.50, 145,523.92 and 57,710.86 is: 79,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.50 : 145,523.92 = 57,710.86 : x
  2. Step 2: Convert to fraction form
    105,455.50/145,523.92 = 57,710.86/x
  3. Step 3: Cross multiply
    105,455.50x = 145,523.92 × 57,710.86
  4. Step 4: Simplify right side
    105,455.50x = 8,398,310,573.77
  5. Step 5: Solve for x
    x = 8,398,310,573.77/105,455.50
  6. Step 6: Final answer
    x = 79,638.43

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1.5x scale

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.