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Finding the Fourth Proportional to 70,818.86, 97,730.34 and 40,605.95

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Solution

The fourth proportional to 70,818.86, 97,730.34 and 40,605.95 is: 56,036.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,818.86 : 97,730.34 = 40,605.95 : x
  2. Step 2: Convert to fraction form
    70,818.86/97,730.34 = 40,605.95/x
  3. Step 3: Cross multiply
    70,818.86x = 97,730.34 × 40,605.95
  4. Step 4: Simplify right side
    70,818.86x = 3,968,433,299.52
  5. Step 5: Solve for x
    x = 3,968,433,299.52/70,818.86
  6. Step 6: Final answer
    x = 56,036.39

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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.