Home / 76,971.01-106,221.80-42,978.35

Finding the Fourth Proportional to 76,971.01, 106,221.80 and 42,978.35

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Solution

The fourth proportional to 76,971.01, 106,221.80 and 42,978.35 is: 59,311.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,971.01 : 106,221.80 = 42,978.35 : x
  2. Step 2: Convert to fraction form
    76,971.01/106,221.80 = 42,978.35/x
  3. Step 3: Cross multiply
    76,971.01x = 106,221.80 × 42,978.35
  4. Step 4: Simplify right side
    76,971.01x = 4,565,237,698.03
  5. Step 5: Solve for x
    x = 4,565,237,698.03/76,971.01
  6. Step 6: Final answer
    x = 59,311.13

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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.