Home / 74,857.50-103,303.68-40,866.78

Finding the Fourth Proportional to 74,857.50, 103,303.68 and 40,866.78

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Solution

The fourth proportional to 74,857.50, 103,303.68 and 40,866.78 is: 56,396.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,857.50 : 103,303.68 = 40,866.78 : x
  2. Step 2: Convert to fraction form
    74,857.50/103,303.68 = 40,866.78/x
  3. Step 3: Cross multiply
    74,857.50x = 103,303.68 × 40,866.78
  4. Step 4: Simplify right side
    74,857.50x = 4,221,688,763.75
  5. Step 5: Solve for x
    x = 4,221,688,763.75/74,857.50
  6. Step 6: Final answer
    x = 56,396.34

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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.