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Finding the Fourth Proportional to 66,314.92, 99,379.12 and 56,415.12

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Solution

The fourth proportional to 66,314.92, 99,379.12 and 56,415.12 is: 84,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314.92 : 99,379.12 = 56,415.12 : x
  2. Step 2: Convert to fraction form
    66,314.92/99,379.12 = 56,415.12/x
  3. Step 3: Cross multiply
    66,314.92x = 99,379.12 × 56,415.12
  4. Step 4: Simplify right side
    66,314.92x = 5,606,484,980.29
  5. Step 5: Solve for x
    x = 5,606,484,980.29/66,314.92
  6. Step 6: Final answer
    x = 84,543.34

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1.5x scale

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.