Home / 77,948.02-107,568.12-42,138.04

Finding the Fourth Proportional to 77,948.02, 107,568.12 and 42,138.04

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Solution

The fourth proportional to 77,948.02, 107,568.12 and 42,138.04 is: 58,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,948.02 : 107,568.12 = 42,138.04 : x
  2. Step 2: Convert to fraction form
    77,948.02/107,568.12 = 42,138.04/x
  3. Step 3: Cross multiply
    77,948.02x = 107,568.12 × 42,138.04
  4. Step 4: Simplify right side
    77,948.02x = 4,532,709,743.28
  5. Step 5: Solve for x
    x = 4,532,709,743.28/77,948.02
  6. Step 6: Final answer
    x = 58,150.42

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1.5x scale

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.