Home / 78,352.12-108,125.93-42,542.15

Finding the Fourth Proportional to 78,352.12, 108,125.93 and 42,542.15

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Solution

The fourth proportional to 78,352.12, 108,125.93 and 42,542.15 is: 58,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,352.12 : 108,125.93 = 42,542.15 : x
  2. Step 2: Convert to fraction form
    78,352.12/108,125.93 = 42,542.15/x
  3. Step 3: Cross multiply
    78,352.12x = 108,125.93 × 42,542.15
  4. Step 4: Simplify right side
    78,352.12x = 4,599,909,320.24
  5. Step 5: Solve for x
    x = 4,599,909,320.24/78,352.12
  6. Step 6: Final answer
    x = 58,708.17

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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.