Home / 101,590.48-140,187.08-56,872.40

Finding the Fourth Proportional to 101,590.48, 140,187.08 and 56,872.40

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Solution

The fourth proportional to 101,590.48, 140,187.08 and 56,872.40 is: 78,479.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,590.48 : 140,187.08 = 56,872.40 : x
  2. Step 2: Convert to fraction form
    101,590.48/140,187.08 = 56,872.40/x
  3. Step 3: Cross multiply
    101,590.48x = 140,187.08 × 56,872.40
  4. Step 4: Simplify right side
    101,590.48x = 7,972,775,688.59
  5. Step 5: Solve for x
    x = 7,972,775,688.59/101,590.48
  6. Step 6: Final answer
    x = 78,479.56

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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.