Home / 85,135.63-117,490.20-52,887.91

Finding the Fourth Proportional to 85,135.63, 117,490.20 and 52,887.91

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Solution

The fourth proportional to 85,135.63, 117,490.20 and 52,887.91 is: 72,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,135.63 : 117,490.20 = 52,887.91 : x
  2. Step 2: Convert to fraction form
    85,135.63/117,490.20 = 52,887.91/x
  3. Step 3: Cross multiply
    85,135.63x = 117,490.20 × 52,887.91
  4. Step 4: Simplify right side
    85,135.63x = 6,213,811,123.48
  5. Step 5: Solve for x
    x = 6,213,811,123.48/85,135.63
  6. Step 6: Final answer
    x = 72,987.20

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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.