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Finding the Fourth Proportional to 71,358.90, 98,471.88 and 41,145.90

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Solution

The fourth proportional to 71,358.90, 98,471.88 and 41,145.90 is: 56,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,358.90 : 98,471.88 = 41,145.90 : x
  2. Step 2: Convert to fraction form
    71,358.90/98,471.88 = 41,145.90/x
  3. Step 3: Cross multiply
    71,358.90x = 98,471.88 × 41,145.90
  4. Step 4: Simplify right side
    71,358.90x = 4,051,714,127.29
  5. Step 5: Solve for x
    x = 4,051,714,127.29/71,358.90
  6. Step 6: Final answer
    x = 56,779.38

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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.