Home / 71,828.64-99,122.40-40,000.32

Finding the Fourth Proportional to 71,828.64, 99,122.40 and 40,000.32

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Solution

The fourth proportional to 71,828.64, 99,122.40 and 40,000.32 is: 55,199.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,828.64 : 99,122.40 = 40,000.32 : x
  2. Step 2: Convert to fraction form
    71,828.64/99,122.40 = 40,000.32/x
  3. Step 3: Cross multiply
    71,828.64x = 99,122.40 × 40,000.32
  4. Step 4: Simplify right side
    71,828.64x = 3,964,927,719.17
  5. Step 5: Solve for x
    x = 3,964,927,719.17/71,828.64
  6. Step 6: Final answer
    x = 55,199.82

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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.