Home / 74,011.48-102,137.34-40,479.64

Finding the Fourth Proportional to 74,011.48, 102,137.34 and 40,479.64

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Solution

The fourth proportional to 74,011.48, 102,137.34 and 40,479.64 is: 55,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,011.48 : 102,137.34 = 40,479.64 : x
  2. Step 2: Convert to fraction form
    74,011.48/102,137.34 = 40,479.64/x
  3. Step 3: Cross multiply
    74,011.48x = 102,137.34 × 40,479.64
  4. Step 4: Simplify right side
    74,011.48x = 4,134,482,753.76
  5. Step 5: Solve for x
    x = 4,134,482,753.76/74,011.48
  6. Step 6: Final answer
    x = 55,862.72

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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.