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Finding the Fourth Proportional to 55,841.80, 77,060.79 and 30,690.76

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Solution

The fourth proportional to 55,841.80, 77,060.79 and 30,690.76 is: 42,352.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,841.80 : 77,060.79 = 30,690.76 : x
  2. Step 2: Convert to fraction form
    55,841.80/77,060.79 = 30,690.76/x
  3. Step 3: Cross multiply
    55,841.80x = 77,060.79 × 30,690.76
  4. Step 4: Simplify right side
    55,841.80x = 2,365,054,211.30
  5. Step 5: Solve for x
    x = 2,365,054,211.30/55,841.80
  6. Step 6: Final answer
    x = 42,352.76

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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.