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Finding the Fourth Proportional to 71,405.94, 98,544.06 and 39,574.16

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Solution

The fourth proportional to 71,405.94, 98,544.06 and 39,574.16 is: 54,614.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,405.94 : 98,544.06 = 39,574.16 : x
  2. Step 2: Convert to fraction form
    71,405.94/98,544.06 = 39,574.16/x
  3. Step 3: Cross multiply
    71,405.94x = 98,544.06 × 39,574.16
  4. Step 4: Simplify right side
    71,405.94x = 3,899,798,397.49
  5. Step 5: Solve for x
    x = 3,899,798,397.49/71,405.94
  6. Step 6: Final answer
    x = 54,614.48

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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.