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Finding the Fourth Proportional to 97,812.62, 134,980.71 and 55,370.78

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Solution

The fourth proportional to 97,812.62, 134,980.71 and 55,370.78 is: 76,411.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,812.62 : 134,980.71 = 55,370.78 : x
  2. Step 2: Convert to fraction form
    97,812.62/134,980.71 = 55,370.78/x
  3. Step 3: Cross multiply
    97,812.62x = 134,980.71 × 55,370.78
  4. Step 4: Simplify right side
    97,812.62x = 7,473,987,197.65
  5. Step 5: Solve for x
    x = 7,473,987,197.65/97,812.62
  6. Step 6: Final answer
    x = 76,411.28

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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.