Home / 51,435.86-70,981.10-28,774.76

Finding the Fourth Proportional to 51,435.86, 70,981.10 and 28,774.76

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Solution

The fourth proportional to 51,435.86, 70,981.10 and 28,774.76 is: 39,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,435.86 : 70,981.10 = 28,774.76 : x
  2. Step 2: Convert to fraction form
    51,435.86/70,981.10 = 28,774.76/x
  3. Step 3: Cross multiply
    51,435.86x = 70,981.10 × 28,774.76
  4. Step 4: Simplify right side
    51,435.86x = 2,042,464,117.04
  5. Step 5: Solve for x
    x = 2,042,464,117.04/51,435.86
  6. Step 6: Final answer
    x = 39,708.95

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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.