Home / 54,484.02-81,719.95-18,939.20

Finding the Fourth Proportional to 54,484.02, 81,719.95 and 18,939.20

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Solution

The fourth proportional to 54,484.02, 81,719.95 and 18,939.20 is: 28,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,484.02 : 81,719.95 = 18,939.20 : x
  2. Step 2: Convert to fraction form
    54,484.02/81,719.95 = 18,939.20/x
  3. Step 3: Cross multiply
    54,484.02x = 81,719.95 × 18,939.20
  4. Step 4: Simplify right side
    54,484.02x = 1,547,710,477.04
  5. Step 5: Solve for x
    x = 1,547,710,477.04/54,484.02
  6. Step 6: Final answer
    x = 28,406.69

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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.