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Finding the Fourth Proportional to 61,595.61, 85,038.57 and 40,411.86

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Solution

The fourth proportional to 61,595.61, 85,038.57 and 40,411.86 is: 55,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,595.61 : 85,038.57 = 40,411.86 : x
  2. Step 2: Convert to fraction form
    61,595.61/85,038.57 = 40,411.86/x
  3. Step 3: Cross multiply
    61,595.61x = 85,038.57 × 40,411.86
  4. Step 4: Simplify right side
    61,595.61x = 3,436,566,785.44
  5. Step 5: Solve for x
    x = 3,436,566,785.44/61,595.61
  6. Step 6: Final answer
    x = 55,792.40

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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.