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Finding the Fourth Proportional to 109,085.76, 150,552.06 and 61,338.77

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Solution

The fourth proportional to 109,085.76, 150,552.06 and 61,338.77 is: 84,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,085.76 : 150,552.06 = 61,338.77 : x
  2. Step 2: Convert to fraction form
    109,085.76/150,552.06 = 61,338.77/x
  3. Step 3: Cross multiply
    109,085.76x = 150,552.06 × 61,338.77
  4. Step 4: Simplify right side
    109,085.76x = 9,234,677,275.26
  5. Step 5: Solve for x
    x = 9,234,677,275.26/109,085.76
  6. Step 6: Final answer
    x = 84,655.20

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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.