Home / 85,076.35-127,666.16-31,807.10

Finding the Fourth Proportional to 85,076.35, 127,666.16 and 31,807.10

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Solution

The fourth proportional to 85,076.35, 127,666.16 and 31,807.10 is: 47,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,076.35 : 127,666.16 = 31,807.10 : x
  2. Step 2: Convert to fraction form
    85,076.35/127,666.16 = 31,807.10/x
  3. Step 3: Cross multiply
    85,076.35x = 127,666.16 × 31,807.10
  4. Step 4: Simplify right side
    85,076.35x = 4,060,690,317.74
  5. Step 5: Solve for x
    x = 4,060,690,317.74/85,076.35
  6. Step 6: Final answer
    x = 47,729.95

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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.