Home / 75,138.02-103,701.86-42,872.48

Finding the Fourth Proportional to 75,138.02, 103,701.86 and 42,872.48

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Solution

The fourth proportional to 75,138.02, 103,701.86 and 42,872.48 is: 59,170.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,138.02 : 103,701.86 = 42,872.48 : x
  2. Step 2: Convert to fraction form
    75,138.02/103,701.86 = 42,872.48/x
  3. Step 3: Cross multiply
    75,138.02x = 103,701.86 × 42,872.48
  4. Step 4: Simplify right side
    75,138.02x = 4,445,955,918.81
  5. Step 5: Solve for x
    x = 4,445,955,918.81/75,138.02
  6. Step 6: Final answer
    x = 59,170.52

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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.