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Finding the Fourth Proportional to 40,391.90, 60,622.86 and 40,298.50

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Solution

The fourth proportional to 40,391.90, 60,622.86 and 40,298.50 is: 60,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,391.90 : 60,622.86 = 40,298.50 : x
  2. Step 2: Convert to fraction form
    40,391.90/60,622.86 = 40,298.50/x
  3. Step 3: Cross multiply
    40,391.90x = 60,622.86 × 40,298.50
  4. Step 4: Simplify right side
    40,391.90x = 2,443,010,323.71
  5. Step 5: Solve for x
    x = 2,443,010,323.71/40,391.90
  6. Step 6: Final answer
    x = 60,482.68

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1.5x scale

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.