Home / 76,310.34-105,341.17-71,528.10

Finding the Fourth Proportional to 76,310.34, 105,341.17 and 71,528.10

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Solution

The fourth proportional to 76,310.34, 105,341.17 and 71,528.10 is: 98,739.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,310.34 : 105,341.17 = 71,528.10 : x
  2. Step 2: Convert to fraction form
    76,310.34/105,341.17 = 71,528.10/x
  3. Step 3: Cross multiply
    76,310.34x = 105,341.17 × 71,528.10
  4. Step 4: Simplify right side
    76,310.34x = 7,534,853,741.88
  5. Step 5: Solve for x
    x = 7,534,853,741.88/76,310.34
  6. Step 6: Final answer
    x = 98,739.62

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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.