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Finding the Fourth Proportional to 71,357.30, 98,476.20 and 39,526.20

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Solution

The fourth proportional to 71,357.30, 98,476.20 and 39,526.20 is: 54,547.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,357.30 : 98,476.20 = 39,526.20 : x
  2. Step 2: Convert to fraction form
    71,357.30/98,476.20 = 39,526.20/x
  3. Step 3: Cross multiply
    71,357.30x = 98,476.20 × 39,526.20
  4. Step 4: Simplify right side
    71,357.30x = 3,892,389,976.44
  5. Step 5: Solve for x
    x = 3,892,389,976.44/71,357.30
  6. Step 6: Final answer
    x = 54,547.89

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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.