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Finding the Fourth Proportional to 55,886.60, 77,123.46 and 30,736.10

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Solution

The fourth proportional to 55,886.60, 77,123.46 and 30,736.10 is: 42,415.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,886.60 : 77,123.46 = 30,736.10 : x
  2. Step 2: Convert to fraction form
    55,886.60/77,123.46 = 30,736.10/x
  3. Step 3: Cross multiply
    55,886.60x = 77,123.46 × 30,736.10
  4. Step 4: Simplify right side
    55,886.60x = 2,370,474,378.91
  5. Step 5: Solve for x
    x = 2,370,474,378.91/55,886.60
  6. Step 6: Final answer
    x = 42,415.79

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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.