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Finding the Fourth Proportional to 54,972.70, 77,117.30 and 54,972.70

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Solution

The fourth proportional to 54,972.70, 77,117.30 and 54,972.70 is: 77,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,972.70 : 77,117.30 = 54,972.70 : x
  2. Step 2: Convert to fraction form
    54,972.70/77,117.30 = 54,972.70/x
  3. Step 3: Cross multiply
    54,972.70x = 77,117.30 × 54,972.70
  4. Step 4: Simplify right side
    54,972.70x = 4,239,346,197.71
  5. Step 5: Solve for x
    x = 4,239,346,197.71/54,972.70
  6. Step 6: Final answer
    x = 77,117.30

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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.