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Finding the Fourth Proportional to 74,710.50, 103,101.98 and 40,718.85

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Solution

The fourth proportional to 74,710.50, 103,101.98 and 40,718.85 is: 56,192.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,710.50 : 103,101.98 = 40,718.85 : x
  2. Step 2: Convert to fraction form
    74,710.50/103,101.98 = 40,718.85/x
  3. Step 3: Cross multiply
    74,710.50x = 103,101.98 × 40,718.85
  4. Step 4: Simplify right side
    74,710.50x = 4,198,194,058.32
  5. Step 5: Solve for x
    x = 4,198,194,058.32/74,710.50
  6. Step 6: Final answer
    x = 56,192.83

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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.