Home / 81,384.02-121,928.40-60,089.47

Finding the Fourth Proportional to 81,384.02, 121,928.40 and 60,089.47

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Solution

The fourth proportional to 81,384.02, 121,928.40 and 60,089.47 is: 90,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,384.02 : 121,928.40 = 60,089.47 : x
  2. Step 2: Convert to fraction form
    81,384.02/121,928.40 = 60,089.47/x
  3. Step 3: Cross multiply
    81,384.02x = 121,928.40 × 60,089.47
  4. Step 4: Simplify right side
    81,384.02x = 7,326,612,933.95
  5. Step 5: Solve for x
    x = 7,326,612,933.95/81,384.02
  6. Step 6: Final answer
    x = 90,025.20

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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.