Home / 70,780.72-97,681.43-40,571.07

Finding the Fourth Proportional to 70,780.72, 97,681.43 and 40,571.07

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Solution

The fourth proportional to 70,780.72, 97,681.43 and 40,571.07 is: 55,990.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,780.72 : 97,681.43 = 40,571.07 : x
  2. Step 2: Convert to fraction form
    70,780.72/97,681.43 = 40,571.07/x
  3. Step 3: Cross multiply
    70,780.72x = 97,681.43 × 40,571.07
  4. Step 4: Simplify right side
    70,780.72x = 3,963,039,442.97
  5. Step 5: Solve for x
    x = 3,963,039,442.97/70,780.72
  6. Step 6: Final answer
    x = 55,990.38

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1.5x scale

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.