Home / 74,916.30-112,374.45-30,520.20

Finding the Fourth Proportional to 74,916.30, 112,374.45 and 30,520.20

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Solution

The fourth proportional to 74,916.30, 112,374.45 and 30,520.20 is: 45,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,916.30 : 112,374.45 = 30,520.20 : x
  2. Step 2: Convert to fraction form
    74,916.30/112,374.45 = 30,520.20/x
  3. Step 3: Cross multiply
    74,916.30x = 112,374.45 × 30,520.20
  4. Step 4: Simplify right side
    74,916.30x = 3,429,690,688.89
  5. Step 5: Solve for x
    x = 3,429,690,688.89/74,916.30
  6. Step 6: Final answer
    x = 45,780.30

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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.