Home / 84,989,006.40-127,483,509.60-54,378,004.80

Finding the Fourth Proportional to 84,989,006.40, 127,483,509.60 and 54,378,004.80

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Solution

The fourth proportional to 84,989,006.40, 127,483,509.60 and 54,378,004.80 is: 81,567,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,989,006.40 : 127,483,509.60 = 54,378,004.80 : x
  2. Step 2: Convert to fraction form
    84,989,006.40/127,483,509.60 = 54,378,004.80/x
  3. Step 3: Cross multiply
    84,989,006.40x = 127,483,509.60 × 54,378,004.80
  4. Step 4: Simplify right side
    84,989,006.40x = 6,932,298,896,949,645
  5. Step 5: Solve for x
    x = 6,932,298,896,949,645/84,989,006.40
  6. Step 6: Final answer
    x = 81,567,007.20

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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.