Home / 40,746.12-61,160.40-21,038.76

Finding the Fourth Proportional to 40,746.12, 61,160.40 and 21,038.76

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Solution

The fourth proportional to 40,746.12, 61,160.40 and 21,038.76 is: 31,579.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,746.12 : 61,160.40 = 21,038.76 : x
  2. Step 2: Convert to fraction form
    40,746.12/61,160.40 = 21,038.76/x
  3. Step 3: Cross multiply
    40,746.12x = 61,160.40 × 21,038.76
  4. Step 4: Simplify right side
    40,746.12x = 1,286,738,977.10
  5. Step 5: Solve for x
    x = 1,286,738,977.10/40,746.12
  6. Step 6: Final answer
    x = 31,579.42

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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.