Home / 84,989,005.40-127,483,508.10-54,378,003.80

Finding the Fourth Proportional to 84,989,005.40, 127,483,508.10 and 54,378,003.80

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Solution

The fourth proportional to 84,989,005.40, 127,483,508.10 and 54,378,003.80 is: 81,567,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,989,005.40 : 127,483,508.10 = 54,378,003.80 : x
  2. Step 2: Convert to fraction form
    84,989,005.40/127,483,508.10 = 54,378,003.80/x
  3. Step 3: Cross multiply
    84,989,005.40x = 127,483,508.10 × 54,378,003.80
  4. Step 4: Simplify right side
    84,989,005.40x = 6,932,298,687,899,130
  5. Step 5: Solve for x
    x = 6,932,298,687,899,130/84,989,005.40
  6. Step 6: Final answer
    x = 81,567,005.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.