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Finding the Fourth Proportional to 71,569.40, 100,335.40 and 71,569.40

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Solution

The fourth proportional to 71,569.40, 100,335.40 and 71,569.40 is: 100,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,569.40 : 100,335.40 = 71,569.40 : x
  2. Step 2: Convert to fraction form
    71,569.40/100,335.40 = 71,569.40/x
  3. Step 3: Cross multiply
    71,569.40x = 100,335.40 × 71,569.40
  4. Step 4: Simplify right side
    71,569.40x = 7,180,944,376.76
  5. Step 5: Solve for x
    x = 7,180,944,376.76/71,569.40
  6. Step 6: Final answer
    x = 100,335.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.