Home / 81,623.64-122,501.28-42,192

Finding the Fourth Proportional to 81,623.64, 122,501.28 and 42,192

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Solution

The fourth proportional to 81,623.64, 122,501.28 and 42,192 is: 63,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.64 : 122,501.28 = 42,192 : x
  2. Step 2: Convert to fraction form
    81,623.64/122,501.28 = 42,192/x
  3. Step 3: Cross multiply
    81,623.64x = 122,501.28 × 42,192
  4. Step 4: Simplify right side
    81,623.64x = 5,168,574,005.76
  5. Step 5: Solve for x
    x = 5,168,574,005.76/81,623.64
  6. Step 6: Final answer
    x = 63,322.02

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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.