Home / 74,012.47-102,138.02-40,477.75

Finding the Fourth Proportional to 74,012.47, 102,138.02 and 40,477.75

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Solution

The fourth proportional to 74,012.47, 102,138.02 and 40,477.75 is: 55,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,012.47 : 102,138.02 = 40,477.75 : x
  2. Step 2: Convert to fraction form
    74,012.47/102,138.02 = 40,477.75/x
  3. Step 3: Cross multiply
    74,012.47x = 102,138.02 × 40,477.75
  4. Step 4: Simplify right side
    74,012.47x = 4,134,317,036.67
  5. Step 5: Solve for x
    x = 4,134,317,036.67/74,012.47
  6. Step 6: Final answer
    x = 55,859.74

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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.