Home / 81,152,665.68-111,925,378.28-71,342,133.60

Finding the Fourth Proportional to 81,152,665.68, 111,925,378.28 and 71,342,133.60

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Solution

The fourth proportional to 81,152,665.68, 111,925,378.28 and 71,342,133.60 is: 98,394,738.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,152,665.68 : 111,925,378.28 = 71,342,133.60 : x
  2. Step 2: Convert to fraction form
    81,152,665.68/111,925,378.28 = 71,342,133.60/x
  3. Step 3: Cross multiply
    81,152,665.68x = 111,925,378.28 × 71,342,133.60
  4. Step 4: Simplify right side
    81,152,665.68x = 7,984,995,290,482,298
  5. Step 5: Solve for x
    x = 7,984,995,290,482,298/81,152,665.68
  6. Step 6: Final answer
    x = 98,394,738.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.