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Finding the Fourth Proportional to 61,987.80, 93,078.90 and 35,743.80

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Solution

The fourth proportional to 61,987.80, 93,078.90 and 35,743.80 is: 53,671.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,987.80 : 93,078.90 = 35,743.80 : x
  2. Step 2: Convert to fraction form
    61,987.80/93,078.90 = 35,743.80/x
  3. Step 3: Cross multiply
    61,987.80x = 93,078.90 × 35,743.80
  4. Step 4: Simplify right side
    61,987.80x = 3,326,993,585.82
  5. Step 5: Solve for x
    x = 3,326,993,585.82/61,987.80
  6. Step 6: Final answer
    x = 53,671.75

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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.