Home / 51,801.60-77,702.40-33,139.20

Finding the Fourth Proportional to 51,801.60, 77,702.40 and 33,139.20

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Solution

The fourth proportional to 51,801.60, 77,702.40 and 33,139.20 is: 49,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,801.60 : 77,702.40 = 33,139.20 : x
  2. Step 2: Convert to fraction form
    51,801.60/77,702.40 = 33,139.20/x
  3. Step 3: Cross multiply
    51,801.60x = 77,702.40 × 33,139.20
  4. Step 4: Simplify right side
    51,801.60x = 2,574,995,374.08
  5. Step 5: Solve for x
    x = 2,574,995,374.08/51,801.60
  6. Step 6: Final answer
    x = 49,708.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.