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Finding the Fourth Proportional to 70,463.40, 97,235.80 and 40,242.79

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Solution

The fourth proportional to 70,463.40, 97,235.80 and 40,242.79 is: 55,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,463.40 : 97,235.80 = 40,242.79 : x
  2. Step 2: Convert to fraction form
    70,463.40/97,235.80 = 40,242.79/x
  3. Step 3: Cross multiply
    70,463.40x = 97,235.80 × 40,242.79
  4. Step 4: Simplify right side
    70,463.40x = 3,913,039,879.88
  5. Step 5: Solve for x
    x = 3,913,039,879.88/70,463.40
  6. Step 6: Final answer
    x = 55,532.94

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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.