Home / 85,376.77-117,827.98-63,829.20

Finding the Fourth Proportional to 85,376.77, 117,827.98 and 63,829.20

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Solution

The fourth proportional to 85,376.77, 117,827.98 and 63,829.20 is: 88,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,376.77 : 117,827.98 = 63,829.20 : x
  2. Step 2: Convert to fraction form
    85,376.77/117,827.98 = 63,829.20/x
  3. Step 3: Cross multiply
    85,376.77x = 117,827.98 × 63,829.20
  4. Step 4: Simplify right side
    85,376.77x = 7,520,865,701.02
  5. Step 5: Solve for x
    x = 7,520,865,701.02/85,376.77
  6. Step 6: Final answer
    x = 88,090.30

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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.