Home / 55,671.20-76,836-42,286.76

Finding the Fourth Proportional to 55,671.20, 76,836 and 42,286.76

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Solution

The fourth proportional to 55,671.20, 76,836 and 42,286.76 is: 58,363.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,671.20 : 76,836 = 42,286.76 : x
  2. Step 2: Convert to fraction form
    55,671.20/76,836 = 42,286.76/x
  3. Step 3: Cross multiply
    55,671.20x = 76,836 × 42,286.76
  4. Step 4: Simplify right side
    55,671.20x = 3,249,145,491.36
  5. Step 5: Solve for x
    x = 3,249,145,491.36/55,671.20
  6. Step 6: Final answer
    x = 58,363.13

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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.