Home / 76,887.36-106,079.64-42,890.34

Finding the Fourth Proportional to 76,887.36, 106,079.64 and 42,890.34

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Solution

The fourth proportional to 76,887.36, 106,079.64 and 42,890.34 is: 59,174.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,887.36 : 106,079.64 = 42,890.34 : x
  2. Step 2: Convert to fraction form
    76,887.36/106,079.64 = 42,890.34/x
  3. Step 3: Cross multiply
    76,887.36x = 106,079.64 × 42,890.34
  4. Step 4: Simplify right side
    76,887.36x = 4,549,791,826.68
  5. Step 5: Solve for x
    x = 4,549,791,826.68/76,887.36
  6. Step 6: Final answer
    x = 59,174.77

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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.