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Finding the Fourth Proportional to 55,953.92, 77,216.16 and 30,803.40

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Solution

The fourth proportional to 55,953.92, 77,216.16 and 30,803.40 is: 42,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,953.92 : 77,216.16 = 30,803.40 : x
  2. Step 2: Convert to fraction form
    55,953.92/77,216.16 = 30,803.40/x
  3. Step 3: Cross multiply
    55,953.92x = 77,216.16 × 30,803.40
  4. Step 4: Simplify right side
    55,953.92x = 2,378,520,262.94
  5. Step 5: Solve for x
    x = 2,378,520,262.94/55,953.92
  6. Step 6: Final answer
    x = 42,508.55

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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.