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Finding the Fourth Proportional to 70,818.87, 97,726.23 and 40,602.72

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Solution

The fourth proportional to 70,818.87, 97,726.23 and 40,602.72 is: 56,029.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,818.87 : 97,726.23 = 40,602.72 : x
  2. Step 2: Convert to fraction form
    70,818.87/97,726.23 = 40,602.72/x
  3. Step 3: Cross multiply
    70,818.87x = 97,726.23 × 40,602.72
  4. Step 4: Simplify right side
    70,818.87x = 3,967,950,753.35
  5. Step 5: Solve for x
    x = 3,967,950,753.35/70,818.87
  6. Step 6: Final answer
    x = 56,029.57

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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.