Home / 78,600.57-108,468.60-42,790.83

Finding the Fourth Proportional to 78,600.57, 108,468.60 and 42,790.83

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Solution

The fourth proportional to 78,600.57, 108,468.60 and 42,790.83 is: 59,051.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,600.57 : 108,468.60 = 42,790.83 : x
  2. Step 2: Convert to fraction form
    78,600.57/108,468.60 = 42,790.83/x
  3. Step 3: Cross multiply
    78,600.57x = 108,468.60 × 42,790.83
  4. Step 4: Simplify right side
    78,600.57x = 4,641,461,422.94
  5. Step 5: Solve for x
    x = 4,641,461,422.94/78,600.57
  6. Step 6: Final answer
    x = 59,051.24

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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.