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Finding the Fourth Proportional to 101,370.48, 139,885.61 and 56,045.82

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Solution

The fourth proportional to 101,370.48, 139,885.61 and 56,045.82 is: 77,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,370.48 : 139,885.61 = 56,045.82 : x
  2. Step 2: Convert to fraction form
    101,370.48/139,885.61 = 56,045.82/x
  3. Step 3: Cross multiply
    101,370.48x = 139,885.61 × 56,045.82
  4. Step 4: Simplify right side
    101,370.48x = 7,840,003,176.14
  5. Step 5: Solve for x
    x = 7,840,003,176.14/101,370.48
  6. Step 6: Final answer
    x = 77,340.10

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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.