Home / 103,287.84-142,528.86-57,959.52

Finding the Fourth Proportional to 103,287.84, 142,528.86 and 57,959.52

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Solution

The fourth proportional to 103,287.84, 142,528.86 and 57,959.52 is: 79,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,287.84 : 142,528.86 = 57,959.52 : x
  2. Step 2: Convert to fraction form
    103,287.84/142,528.86 = 57,959.52/x
  3. Step 3: Cross multiply
    103,287.84x = 142,528.86 × 57,959.52
  4. Step 4: Simplify right side
    103,287.84x = 8,260,904,311.75
  5. Step 5: Solve for x
    x = 8,260,904,311.75/103,287.84
  6. Step 6: Final answer
    x = 79,979.45

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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.