Home / 86,523.02-129,788.79-42,187.67

Finding the Fourth Proportional to 86,523.02, 129,788.79 and 42,187.67

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Solution

The fourth proportional to 86,523.02, 129,788.79 and 42,187.67 is: 63,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,523.02 : 129,788.79 = 42,187.67 : x
  2. Step 2: Convert to fraction form
    86,523.02/129,788.79 = 42,187.67/x
  3. Step 3: Cross multiply
    86,523.02x = 129,788.79 × 42,187.67
  4. Step 4: Simplify right side
    86,523.02x = 5,475,486,431.28
  5. Step 5: Solve for x
    x = 5,475,486,431.28/86,523.02
  6. Step 6: Final answer
    x = 63,283.58

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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.