Home / 80,751,580.80-121,127,371.20-74,516,006.40

Finding the Fourth Proportional to 80,751,580.80, 121,127,371.20 and 74,516,006.40

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Solution

The fourth proportional to 80,751,580.80, 121,127,371.20 and 74,516,006.40 is: 111,774,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,751,580.80 : 121,127,371.20 = 74,516,006.40 : x
  2. Step 2: Convert to fraction form
    80,751,580.80/121,127,371.20 = 74,516,006.40/x
  3. Step 3: Cross multiply
    80,751,580.80x = 121,127,371.20 × 74,516,006.40
  4. Step 4: Simplify right side
    80,751,580.80x = 9,025,927,967,554,376
  5. Step 5: Solve for x
    x = 9,025,927,967,554,376/80,751,580.80
  6. Step 6: Final answer
    x = 111,774,009.60

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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.