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Finding the Fourth Proportional to 71,525.90, 98,703.80 and 39,260.48

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Solution

The fourth proportional to 71,525.90, 98,703.80 and 39,260.48 is: 54,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,525.90 : 98,703.80 = 39,260.48 : x
  2. Step 2: Convert to fraction form
    71,525.90/98,703.80 = 39,260.48/x
  3. Step 3: Cross multiply
    71,525.90x = 98,703.80 × 39,260.48
  4. Step 4: Simplify right side
    71,525.90x = 3,875,158,616.28
  5. Step 5: Solve for x
    x = 3,875,158,616.28/71,525.90
  6. Step 6: Final answer
    x = 54,178.40

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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.