Home / 54,210.34-81,315-42,374.08

Finding the Fourth Proportional to 54,210.34, 81,315 and 42,374.08

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Solution

The fourth proportional to 54,210.34, 81,315 and 42,374.08 is: 63,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,210.34 : 81,315 = 42,374.08 : x
  2. Step 2: Convert to fraction form
    54,210.34/81,315 = 42,374.08/x
  3. Step 3: Cross multiply
    54,210.34x = 81,315 × 42,374.08
  4. Step 4: Simplify right side
    54,210.34x = 3,445,648,315.20
  5. Step 5: Solve for x
    x = 3,445,648,315.20/54,210.34
  6. Step 6: Final answer
    x = 63,560.72

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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.