Home / 75,136.03-103,699.10-42,870.49

Finding the Fourth Proportional to 75,136.03, 103,699.10 and 42,870.49

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Solution

The fourth proportional to 75,136.03, 103,699.10 and 42,870.49 is: 59,167.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,136.03 : 103,699.10 = 42,870.49 : x
  2. Step 2: Convert to fraction form
    75,136.03/103,699.10 = 42,870.49/x
  3. Step 3: Cross multiply
    75,136.03x = 103,699.10 × 42,870.49
  4. Step 4: Simplify right side
    75,136.03x = 4,445,631,077.49
  5. Step 5: Solve for x
    x = 4,445,631,077.49/75,136.03
  6. Step 6: Final answer
    x = 59,167.77

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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.