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Finding the Fourth Proportional to 70,570.71, 97,395.32 and 40,358.84

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Solution

The fourth proportional to 70,570.71, 97,395.32 and 40,358.84 is: 55,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,570.71 : 97,395.32 = 40,358.84 : x
  2. Step 2: Convert to fraction form
    70,570.71/97,395.32 = 40,358.84/x
  3. Step 3: Cross multiply
    70,570.71x = 97,395.32 × 40,358.84
  4. Step 4: Simplify right side
    70,570.71x = 3,930,762,136.63
  5. Step 5: Solve for x
    x = 3,930,762,136.63/70,570.71
  6. Step 6: Final answer
    x = 55,699.63

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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.