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Finding the Fourth Proportional to 101,369.45, 139,877.62 and 56,041.31

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Solution

The fourth proportional to 101,369.45, 139,877.62 and 56,041.31 is: 77,330.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,369.45 : 139,877.62 = 56,041.31 : x
  2. Step 2: Convert to fraction form
    101,369.45/139,877.62 = 56,041.31/x
  3. Step 3: Cross multiply
    101,369.45x = 139,877.62 × 56,041.31
  4. Step 4: Simplify right side
    101,369.45x = 7,838,924,084.89
  5. Step 5: Solve for x
    x = 7,838,924,084.89/101,369.45
  6. Step 6: Final answer
    x = 77,330.25

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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.