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Finding the Fourth Proportional to 84,379.76, 116,417.76 and 56,090.24

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Solution

The fourth proportional to 84,379.76, 116,417.76 and 56,090.24 is: 77,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,379.76 : 116,417.76 = 56,090.24 : x
  2. Step 2: Convert to fraction form
    84,379.76/116,417.76 = 56,090.24/x
  3. Step 3: Cross multiply
    84,379.76x = 116,417.76 × 56,090.24
  4. Step 4: Simplify right side
    84,379.76x = 6,529,900,098.66
  5. Step 5: Solve for x
    x = 6,529,900,098.66/84,379.76
  6. Step 6: Final answer
    x = 77,387.04

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1.5x scale

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.