Home / 74,509.68-111,665.40-54,695.28

Finding the Fourth Proportional to 74,509.68, 111,665.40 and 54,695.28

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Solution

The fourth proportional to 74,509.68, 111,665.40 and 54,695.28 is: 81,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,509.68 : 111,665.40 = 54,695.28 : x
  2. Step 2: Convert to fraction form
    74,509.68/111,665.40 = 54,695.28/x
  3. Step 3: Cross multiply
    74,509.68x = 111,665.40 × 54,695.28
  4. Step 4: Simplify right side
    74,509.68x = 6,107,570,319.31
  5. Step 5: Solve for x
    x = 6,107,570,319.31/74,509.68
  6. Step 6: Final answer
    x = 81,970.16

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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.