Home / 74,890,483.20-112,335,724.80-66,380,428.80

Finding the Fourth Proportional to 74,890,483.20, 112,335,724.80 and 66,380,428.80

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Solution

The fourth proportional to 74,890,483.20, 112,335,724.80 and 66,380,428.80 is: 99,570,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890,483.20 : 112,335,724.80 = 66,380,428.80 : x
  2. Step 2: Convert to fraction form
    74,890,483.20/112,335,724.80 = 66,380,428.80/x
  3. Step 3: Cross multiply
    74,890,483.20x = 112,335,724.80 × 66,380,428.80
  4. Step 4: Simplify right side
    74,890,483.20x = 7,456,893,581,782,794
  5. Step 5: Solve for x
    x = 7,456,893,581,782,794/74,890,483.20
  6. Step 6: Final answer
    x = 99,570,643.20

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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.