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Finding the Fourth Proportional to 70,808.13, 97,703.79 and 40,587.89

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Solution

The fourth proportional to 70,808.13, 97,703.79 and 40,587.89 is: 56,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.13 : 97,703.79 = 40,587.89 : x
  2. Step 2: Convert to fraction form
    70,808.13/97,703.79 = 40,587.89/x
  3. Step 3: Cross multiply
    70,808.13x = 97,703.79 × 40,587.89
  4. Step 4: Simplify right side
    70,808.13x = 3,965,590,478.16
  5. Step 5: Solve for x
    x = 3,965,590,478.16/70,808.13
  6. Step 6: Final answer
    x = 56,004.73

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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.