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Finding the Fourth Proportional to 60,985.80, 91,478.70 and 40,058.10

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Solution

The fourth proportional to 60,985.80, 91,478.70 and 40,058.10 is: 60,087.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,985.80 : 91,478.70 = 40,058.10 : x
  2. Step 2: Convert to fraction form
    60,985.80/91,478.70 = 40,058.10/x
  3. Step 3: Cross multiply
    60,985.80x = 91,478.70 × 40,058.10
  4. Step 4: Simplify right side
    60,985.80x = 3,664,462,912.47
  5. Step 5: Solve for x
    x = 3,664,462,912.47/60,985.80
  6. Step 6: Final answer
    x = 60,087.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.