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Finding the Fourth Proportional to 77,310.51, 106,686.70 and 45,481.46

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Solution

The fourth proportional to 77,310.51, 106,686.70 and 45,481.46 is: 62,763.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,310.51 : 106,686.70 = 45,481.46 : x
  2. Step 2: Convert to fraction form
    77,310.51/106,686.70 = 45,481.46/x
  3. Step 3: Cross multiply
    77,310.51x = 106,686.70 × 45,481.46
  4. Step 4: Simplify right side
    77,310.51x = 4,852,266,878.58
  5. Step 5: Solve for x
    x = 4,852,266,878.58/77,310.51
  6. Step 6: Final answer
    x = 62,763.35

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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.