Home / 78,376-108,159.08-42,566.62

Finding the Fourth Proportional to 78,376, 108,159.08 and 42,566.62

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Solution

The fourth proportional to 78,376, 108,159.08 and 42,566.62 is: 58,742.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,376 : 108,159.08 = 42,566.62 : x
  2. Step 2: Convert to fraction form
    78,376/108,159.08 = 42,566.62/x
  3. Step 3: Cross multiply
    78,376x = 108,159.08 × 42,566.62
  4. Step 4: Simplify right side
    78,376x = 4,603,966,457.91
  5. Step 5: Solve for x
    x = 4,603,966,457.91/78,376
  6. Step 6: Final answer
    x = 58,742.04

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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.