Home / 85,420.32-117,880.25-47,695.92

Finding the Fourth Proportional to 85,420.32, 117,880.25 and 47,695.92

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Solution

The fourth proportional to 85,420.32, 117,880.25 and 47,695.92 is: 65,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,420.32 : 117,880.25 = 47,695.92 : x
  2. Step 2: Convert to fraction form
    85,420.32/117,880.25 = 47,695.92/x
  3. Step 3: Cross multiply
    85,420.32x = 117,880.25 × 47,695.92
  4. Step 4: Simplify right side
    85,420.32x = 5,622,406,973.58
  5. Step 5: Solve for x
    x = 5,622,406,973.58/85,420.32
  6. Step 6: Final answer
    x = 65,820.49

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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.