Home / 99,486.48-137,267.70-56,456.40

Finding the Fourth Proportional to 99,486.48, 137,267.70 and 56,456.40

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Solution

The fourth proportional to 99,486.48, 137,267.70 and 56,456.40 is: 77,896.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,486.48 : 137,267.70 = 56,456.40 : x
  2. Step 2: Convert to fraction form
    99,486.48/137,267.70 = 56,456.40/x
  3. Step 3: Cross multiply
    99,486.48x = 137,267.70 × 56,456.40
  4. Step 4: Simplify right side
    99,486.48x = 7,749,640,178.28
  5. Step 5: Solve for x
    x = 7,749,640,178.28/99,486.48
  6. Step 6: Final answer
    x = 77,896.42

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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.