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Finding the Fourth Proportional to 101,316.48, 139,807.05 and 55,987.14

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Solution

The fourth proportional to 101,316.48, 139,807.05 and 55,987.14 is: 77,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,316.48 : 139,807.05 = 55,987.14 : x
  2. Step 2: Convert to fraction form
    101,316.48/139,807.05 = 55,987.14/x
  3. Step 3: Cross multiply
    101,316.48x = 139,807.05 × 55,987.14
  4. Step 4: Simplify right side
    101,316.48x = 7,827,397,333.56
  5. Step 5: Solve for x
    x = 7,827,397,333.56/101,316.48
  6. Step 6: Final answer
    x = 77,256.90

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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.