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Finding the Fourth Proportional to 105,449.34, 145,520.10 and 57,703.08

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Solution

The fourth proportional to 105,449.34, 145,520.10 and 57,703.08 is: 79,630.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,449.34 : 145,520.10 = 57,703.08 : x
  2. Step 2: Convert to fraction form
    105,449.34/145,520.10 = 57,703.08/x
  3. Step 3: Cross multiply
    105,449.34x = 145,520.10 × 57,703.08
  4. Step 4: Simplify right side
    105,449.34x = 8,396,957,971.91
  5. Step 5: Solve for x
    x = 8,396,957,971.91/105,449.34
  6. Step 6: Final answer
    x = 79,630.26

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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.