Home / 78,119.04-107,803.74-42,308.24

Finding the Fourth Proportional to 78,119.04, 107,803.74 and 42,308.24

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Solution

The fourth proportional to 78,119.04, 107,803.74 and 42,308.24 is: 58,385.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.04 : 107,803.74 = 42,308.24 : x
  2. Step 2: Convert to fraction form
    78,119.04/107,803.74 = 42,308.24/x
  3. Step 3: Cross multiply
    78,119.04x = 107,803.74 × 42,308.24
  4. Step 4: Simplify right side
    78,119.04x = 4,560,986,124.45
  5. Step 5: Solve for x
    x = 4,560,986,124.45/78,119.04
  6. Step 6: Final answer
    x = 58,385.07

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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.