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Finding the Fourth Proportional to 70,239.57, 105,369.84 and 25,862.91

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Solution

The fourth proportional to 70,239.57, 105,369.84 and 25,862.91 is: 38,798.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,239.57 : 105,369.84 = 25,862.91 : x
  2. Step 2: Convert to fraction form
    70,239.57/105,369.84 = 25,862.91/x
  3. Step 3: Cross multiply
    70,239.57x = 105,369.84 × 25,862.91
  4. Step 4: Simplify right side
    70,239.57x = 2,725,170,688.63
  5. Step 5: Solve for x
    x = 2,725,170,688.63/70,239.57
  6. Step 6: Final answer
    x = 38,798.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.