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Finding the Fourth Proportional to 79,686.60, 119,501.34 and 26,368.76

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Solution

The fourth proportional to 79,686.60, 119,501.34 and 26,368.76 is: 39,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,686.60 : 119,501.34 = 26,368.76 : x
  2. Step 2: Convert to fraction form
    79,686.60/119,501.34 = 26,368.76/x
  3. Step 3: Cross multiply
    79,686.60x = 119,501.34 × 26,368.76
  4. Step 4: Simplify right side
    79,686.60x = 3,151,102,154.14
  5. Step 5: Solve for x
    x = 3,151,102,154.14/79,686.60
  6. Step 6: Final answer
    x = 39,543.69

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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.