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Finding the Fourth Proportional to 70,440, 97,210.08 and 40,632

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Solution

The fourth proportional to 70,440, 97,210.08 and 40,632 is: 56,073.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,440 : 97,210.08 = 40,632 : x
  2. Step 2: Convert to fraction form
    70,440/97,210.08 = 40,632/x
  3. Step 3: Cross multiply
    70,440x = 97,210.08 × 40,632
  4. Step 4: Simplify right side
    70,440x = 3,949,839,970.56
  5. Step 5: Solve for x
    x = 3,949,839,970.56/70,440
  6. Step 6: Final answer
    x = 56,073.82

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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.