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Finding the Fourth Proportional to 70,255.78, 96,955.50 and 40,045.66

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Solution

The fourth proportional to 70,255.78, 96,955.50 and 40,045.66 is: 55,264.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,255.78 : 96,955.50 = 40,045.66 : x
  2. Step 2: Convert to fraction form
    70,255.78/96,955.50 = 40,045.66/x
  3. Step 3: Cross multiply
    70,255.78x = 96,955.50 × 40,045.66
  4. Step 4: Simplify right side
    70,255.78x = 3,882,646,988.13
  5. Step 5: Solve for x
    x = 3,882,646,988.13/70,255.78
  6. Step 6: Final answer
    x = 55,264.45

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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.