Home / 78,661.13-108,552.51-42,851.03

Finding the Fourth Proportional to 78,661.13, 108,552.51 and 42,851.03

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Solution

The fourth proportional to 78,661.13, 108,552.51 and 42,851.03 is: 59,134.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,661.13 : 108,552.51 = 42,851.03 : x
  2. Step 2: Convert to fraction form
    78,661.13/108,552.51 = 42,851.03/x
  3. Step 3: Cross multiply
    78,661.13x = 108,552.51 × 42,851.03
  4. Step 4: Simplify right side
    78,661.13x = 4,651,586,319.82
  5. Step 5: Solve for x
    x = 4,651,586,319.82/78,661.13
  6. Step 6: Final answer
    x = 59,134.50

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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.