Home / 70,428,134.40-105,642,201.60-48,509,145.60

Finding the Fourth Proportional to 70,428,134.40, 105,642,201.60 and 48,509,145.60

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Solution

The fourth proportional to 70,428,134.40, 105,642,201.60 and 48,509,145.60 is: 72,763,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428,134.40 : 105,642,201.60 = 48,509,145.60 : x
  2. Step 2: Convert to fraction form
    70,428,134.40/105,642,201.60 = 48,509,145.60/x
  3. Step 3: Cross multiply
    70,428,134.40x = 105,642,201.60 × 48,509,145.60
  4. Step 4: Simplify right side
    70,428,134.40x = 5,124,612,938,918,953
  5. Step 5: Solve for x
    x = 5,124,612,938,918,953/70,428,134.40
  6. Step 6: Final answer
    x = 72,763,718.40

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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.