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Finding the Fourth Proportional to 70,672, 97,544.96 and 40,881.28

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Solution

The fourth proportional to 70,672, 97,544.96 and 40,881.28 is: 56,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672 : 97,544.96 = 40,881.28 : x
  2. Step 2: Convert to fraction form
    70,672/97,544.96 = 40,881.28/x
  3. Step 3: Cross multiply
    70,672x = 97,544.96 × 40,881.28
  4. Step 4: Simplify right side
    70,672x = 3,987,762,822.35
  5. Step 5: Solve for x
    x = 3,987,762,822.35/70,672
  6. Step 6: Final answer
    x = 56,426.35

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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.