Home / 70,984,975.20-106,403,979.60-38,568,386.40

Finding the Fourth Proportional to 70,984,975.20, 106,403,979.60 and 38,568,386.40

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Solution

The fourth proportional to 70,984,975.20, 106,403,979.60 and 38,568,386.40 is: 57,812,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,984,975.20 : 106,403,979.60 = 38,568,386.40 : x
  2. Step 2: Convert to fraction form
    70,984,975.20/106,403,979.60 = 38,568,386.40/x
  3. Step 3: Cross multiply
    70,984,975.20x = 106,403,979.60 × 38,568,386.40
  4. Step 4: Simplify right side
    70,984,975.20x = 4,103,829,799,710,517
  5. Step 5: Solve for x
    x = 4,103,829,799,710,517/70,984,975.20
  6. Step 6: Final answer
    x = 57,812,653.85

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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.