Home / 77,809.40-116,771.70-31,095.80

Finding the Fourth Proportional to 77,809.40, 116,771.70 and 31,095.80

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Solution

The fourth proportional to 77,809.40, 116,771.70 and 31,095.80 is: 46,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,809.40 : 116,771.70 = 31,095.80 : x
  2. Step 2: Convert to fraction form
    77,809.40/116,771.70 = 31,095.80/x
  3. Step 3: Cross multiply
    77,809.40x = 116,771.70 × 31,095.80
  4. Step 4: Simplify right side
    77,809.40x = 3,631,109,428.86
  5. Step 5: Solve for x
    x = 3,631,109,428.86/77,809.40
  6. Step 6: Final answer
    x = 46,666.72

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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.