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Finding the Fourth Proportional to 84,095.86, 115,931.73 and 66,159.76

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Solution

The fourth proportional to 84,095.86, 115,931.73 and 66,159.76 is: 91,205.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,095.86 : 115,931.73 = 66,159.76 : x
  2. Step 2: Convert to fraction form
    84,095.86/115,931.73 = 66,159.76/x
  3. Step 3: Cross multiply
    84,095.86x = 115,931.73 × 66,159.76
  4. Step 4: Simplify right side
    84,095.86x = 7,670,015,433.18
  5. Step 5: Solve for x
    x = 7,670,015,433.18/84,095.86
  6. Step 6: Final answer
    x = 91,205.62

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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.