Home / 74,451.17-102,742.47-42,185.72

Finding the Fourth Proportional to 74,451.17, 102,742.47 and 42,185.72

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Solution

The fourth proportional to 74,451.17, 102,742.47 and 42,185.72 is: 58,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,451.17 : 102,742.47 = 42,185.72 : x
  2. Step 2: Convert to fraction form
    74,451.17/102,742.47 = 42,185.72/x
  3. Step 3: Cross multiply
    74,451.17x = 102,742.47 × 42,185.72
  4. Step 4: Simplify right side
    74,451.17x = 4,334,264,557.82
  5. Step 5: Solve for x
    x = 4,334,264,557.82/74,451.17
  6. Step 6: Final answer
    x = 58,216.21

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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.