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Finding the Fourth Proportional to 70,490.66, 97,282.26 and 40,275.34

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Solution

The fourth proportional to 70,490.66, 97,282.26 and 40,275.34 is: 55,582.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,490.66 : 97,282.26 = 40,275.34 : x
  2. Step 2: Convert to fraction form
    70,490.66/97,282.26 = 40,275.34/x
  3. Step 3: Cross multiply
    70,490.66x = 97,282.26 × 40,275.34
  4. Step 4: Simplify right side
    70,490.66x = 3,918,076,097.47
  5. Step 5: Solve for x
    x = 3,918,076,097.47/70,490.66
  6. Step 6: Final answer
    x = 55,582.91

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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.