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Finding the Fourth Proportional to 73,955.71, 102,058.86 and 40,421.71

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Solution

The fourth proportional to 73,955.71, 102,058.86 and 40,421.71 is: 55,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,955.71 : 102,058.86 = 40,421.71 : x
  2. Step 2: Convert to fraction form
    73,955.71/102,058.86 = 40,421.71/x
  3. Step 3: Cross multiply
    73,955.71x = 102,058.86 × 40,421.71
  4. Step 4: Simplify right side
    73,955.71x = 4,125,393,641.85
  5. Step 5: Solve for x
    x = 4,125,393,641.85/73,955.71
  6. Step 6: Final answer
    x = 55,781.95

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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.