Home / 78,374.12-108,157.07-42,564.83

Finding the Fourth Proportional to 78,374.12, 108,157.07 and 42,564.83

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Solution

The fourth proportional to 78,374.12, 108,157.07 and 42,564.83 is: 58,739.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,374.12 : 108,157.07 = 42,564.83 : x
  2. Step 2: Convert to fraction form
    78,374.12/108,157.07 = 42,564.83/x
  3. Step 3: Cross multiply
    78,374.12x = 108,157.07 × 42,564.83
  4. Step 4: Simplify right side
    78,374.12x = 4,603,686,863.47
  5. Step 5: Solve for x
    x = 4,603,686,863.47/78,374.12
  6. Step 6: Final answer
    x = 58,739.89

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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.