Home / 74,490.32-111,965.88-70,803.92

Finding the Fourth Proportional to 74,490.32, 111,965.88 and 70,803.92

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Solution

The fourth proportional to 74,490.32, 111,965.88 and 70,803.92 is: 106,424.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,490.32 : 111,965.88 = 70,803.92 : x
  2. Step 2: Convert to fraction form
    74,490.32/111,965.88 = 70,803.92/x
  3. Step 3: Cross multiply
    74,490.32x = 111,965.88 × 70,803.92
  4. Step 4: Simplify right side
    74,490.32x = 7,927,623,210.25
  5. Step 5: Solve for x
    x = 7,927,623,210.25/74,490.32
  6. Step 6: Final answer
    x = 106,424.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.