Home / 74,741.46-103,139.10-42,908.28

Finding the Fourth Proportional to 74,741.46, 103,139.10 and 42,908.28

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Solution

The fourth proportional to 74,741.46, 103,139.10 and 42,908.28 is: 59,211.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,741.46 : 103,139.10 = 42,908.28 : x
  2. Step 2: Convert to fraction form
    74,741.46/103,139.10 = 42,908.28/x
  3. Step 3: Cross multiply
    74,741.46x = 103,139.10 × 42,908.28
  4. Step 4: Simplify right side
    74,741.46x = 4,425,521,381.75
  5. Step 5: Solve for x
    x = 4,425,521,381.75/74,741.46
  6. Step 6: Final answer
    x = 59,211.06

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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.