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Finding the Fourth Proportional to 101,369.76, 139,888.08 and 56,046

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Solution

The fourth proportional to 101,369.76, 139,888.08 and 56,046 is: 77,342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,369.76 : 139,888.08 = 56,046 : x
  2. Step 2: Convert to fraction form
    101,369.76/139,888.08 = 56,046/x
  3. Step 3: Cross multiply
    101,369.76x = 139,888.08 × 56,046
  4. Step 4: Simplify right side
    101,369.76x = 7,840,167,331.68
  5. Step 5: Solve for x
    x = 7,840,167,331.68/101,369.76
  6. Step 6: Final answer
    x = 77,342.27

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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.