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Finding the Fourth Proportional to 63,878.36, 88,085.34 and 47,720.36

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Solution

The fourth proportional to 63,878.36, 88,085.34 and 47,720.36 is: 65,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,878.36 : 88,085.34 = 47,720.36 : x
  2. Step 2: Convert to fraction form
    63,878.36/88,085.34 = 47,720.36/x
  3. Step 3: Cross multiply
    63,878.36x = 88,085.34 × 47,720.36
  4. Step 4: Simplify right side
    63,878.36x = 4,203,464,135.52
  5. Step 5: Solve for x
    x = 4,203,464,135.52/63,878.36
  6. Step 6: Final answer
    x = 65,804.20

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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.