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Finding the Fourth Proportional to 103,640.58, 155,437.65 and 40,462.20

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Solution

The fourth proportional to 103,640.58, 155,437.65 and 40,462.20 is: 60,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.58 : 155,437.65 = 40,462.20 : x
  2. Step 2: Convert to fraction form
    103,640.58/155,437.65 = 40,462.20/x
  3. Step 3: Cross multiply
    103,640.58x = 155,437.65 × 40,462.20
  4. Step 4: Simplify right side
    103,640.58x = 6,289,349,281.83
  5. Step 5: Solve for x
    x = 6,289,349,281.83/103,640.58
  6. Step 6: Final answer
    x = 60,684.23

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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.