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Finding the Fourth Proportional to 73,970.28, 102,080.55 and 40,436.28

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Solution

The fourth proportional to 73,970.28, 102,080.55 and 40,436.28 is: 55,802.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,970.28 : 102,080.55 = 40,436.28 : x
  2. Step 2: Convert to fraction form
    73,970.28/102,080.55 = 40,436.28/x
  3. Step 3: Cross multiply
    73,970.28x = 102,080.55 × 40,436.28
  4. Step 4: Simplify right side
    73,970.28x = 4,127,757,702.35
  5. Step 5: Solve for x
    x = 4,127,757,702.35/73,970.28
  6. Step 6: Final answer
    x = 55,802.92

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1.5x scale

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.