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Finding the Fourth Proportional to 70,620.84, 97,463.52 and 40,400.16

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Solution

The fourth proportional to 70,620.84, 97,463.52 and 40,400.16 is: 55,756.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,620.84 : 97,463.52 = 40,400.16 : x
  2. Step 2: Convert to fraction form
    70,620.84/97,463.52 = 40,400.16/x
  3. Step 3: Cross multiply
    70,620.84x = 97,463.52 × 40,400.16
  4. Step 4: Simplify right side
    70,620.84x = 3,937,541,802.16
  5. Step 5: Solve for x
    x = 3,937,541,802.16/70,620.84
  6. Step 6: Final answer
    x = 55,756.09

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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.