Home / 51,442.16-70,991.52-28,780.40

Finding the Fourth Proportional to 51,442.16, 70,991.52 and 28,780.40

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Solution

The fourth proportional to 51,442.16, 70,991.52 and 28,780.40 is: 39,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,442.16 : 70,991.52 = 28,780.40 : x
  2. Step 2: Convert to fraction form
    51,442.16/70,991.52 = 28,780.40/x
  3. Step 3: Cross multiply
    51,442.16x = 70,991.52 × 28,780.40
  4. Step 4: Simplify right side
    51,442.16x = 2,043,164,342.21
  5. Step 5: Solve for x
    x = 2,043,164,342.21/51,442.16
  6. Step 6: Final answer
    x = 39,717.70

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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.