Home / 75,830.40-113,875.20-40,838.40

Finding the Fourth Proportional to 75,830.40, 113,875.20 and 40,838.40

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Solution

The fourth proportional to 75,830.40, 113,875.20 and 40,838.40 is: 61,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,830.40 : 113,875.20 = 40,838.40 : x
  2. Step 2: Convert to fraction form
    75,830.40/113,875.20 = 40,838.40/x
  3. Step 3: Cross multiply
    75,830.40x = 113,875.20 × 40,838.40
  4. Step 4: Simplify right side
    75,830.40x = 4,650,480,967.68
  5. Step 5: Solve for x
    x = 4,650,480,967.68/75,830.40
  6. Step 6: Final answer
    x = 61,327.40

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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.