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Finding the Fourth Proportional to 101,356.57, 139,866.06 and 56,031.84

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Solution

The fourth proportional to 101,356.57, 139,866.06 and 56,031.84 is: 77,320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,356.57 : 139,866.06 = 56,031.84 : x
  2. Step 2: Convert to fraction form
    101,356.57/139,866.06 = 56,031.84/x
  3. Step 3: Cross multiply
    101,356.57x = 139,866.06 × 56,031.84
  4. Step 4: Simplify right side
    101,356.57x = 7,836,953,377.26
  5. Step 5: Solve for x
    x = 7,836,953,377.26/101,356.57
  6. Step 6: Final answer
    x = 77,320.63

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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.