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Finding the Fourth Proportional to 71,528.70, 98,707.68 and 39,263.34

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Solution

The fourth proportional to 71,528.70, 98,707.68 and 39,263.34 is: 54,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,528.70 : 98,707.68 = 39,263.34 : x
  2. Step 2: Convert to fraction form
    71,528.70/98,707.68 = 39,263.34/x
  3. Step 3: Cross multiply
    71,528.70x = 98,707.68 × 39,263.34
  4. Step 4: Simplify right side
    71,528.70x = 3,875,593,200.45
  5. Step 5: Solve for x
    x = 3,875,593,200.45/71,528.70
  6. Step 6: Final answer
    x = 54,182.35

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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.