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Finding the Fourth Proportional to 108,866.51, 163,310.04 and 42,311.74

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Solution

The fourth proportional to 108,866.51, 163,310.04 and 42,311.74 is: 63,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,866.51 : 163,310.04 = 42,311.74 : x
  2. Step 2: Convert to fraction form
    108,866.51/163,310.04 = 42,311.74/x
  3. Step 3: Cross multiply
    108,866.51x = 163,310.04 × 42,311.74
  4. Step 4: Simplify right side
    108,866.51x = 6,909,931,543.59
  5. Step 5: Solve for x
    x = 6,909,931,543.59/108,866.51
  6. Step 6: Final answer
    x = 63,471.60

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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.