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Finding the Fourth Proportional to 101,376.90, 139,894.47 and 56,052.16

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Solution

The fourth proportional to 101,376.90, 139,894.47 and 56,052.16 is: 77,348.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376.90 : 139,894.47 = 56,052.16 : x
  2. Step 2: Convert to fraction form
    101,376.90/139,894.47 = 56,052.16/x
  3. Step 3: Cross multiply
    101,376.90x = 139,894.47 × 56,052.16
  4. Step 4: Simplify right side
    101,376.90x = 7,841,387,215.56
  5. Step 5: Solve for x
    x = 7,841,387,215.56/101,376.90
  6. Step 6: Final answer
    x = 77,348.86

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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.