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Finding the Fourth Proportional to 70,664.76, 97,515.64 and 40,448.16

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Solution

The fourth proportional to 70,664.76, 97,515.64 and 40,448.16 is: 55,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,664.76 : 97,515.64 = 40,448.16 : x
  2. Step 2: Convert to fraction form
    70,664.76/97,515.64 = 40,448.16/x
  3. Step 3: Cross multiply
    70,664.76x = 97,515.64 × 40,448.16
  4. Step 4: Simplify right side
    70,664.76x = 3,944,328,209.22
  5. Step 5: Solve for x
    x = 3,944,328,209.22/70,664.76
  6. Step 6: Final answer
    x = 55,817.47

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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.