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Finding the Fourth Proportional to 85,305.71, 127,959.08 and 37,909.66

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Solution

The fourth proportional to 85,305.71, 127,959.08 and 37,909.66 is: 56,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,305.71 : 127,959.08 = 37,909.66 : x
  2. Step 2: Convert to fraction form
    85,305.71/127,959.08 = 37,909.66/x
  3. Step 3: Cross multiply
    85,305.71x = 127,959.08 × 37,909.66
  4. Step 4: Simplify right side
    85,305.71x = 4,850,885,216.71
  5. Step 5: Solve for x
    x = 4,850,885,216.71/85,305.71
  6. Step 6: Final answer
    x = 56,864.72

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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.