Home / 77,020.68-115,370-61,946.32

Finding the Fourth Proportional to 77,020.68, 115,370 and 61,946.32

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Solution

The fourth proportional to 77,020.68, 115,370 and 61,946.32 is: 92,789.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,020.68 : 115,370 = 61,946.32 : x
  2. Step 2: Convert to fraction form
    77,020.68/115,370 = 61,946.32/x
  3. Step 3: Cross multiply
    77,020.68x = 115,370 × 61,946.32
  4. Step 4: Simplify right side
    77,020.68x = 7,146,746,938.40
  5. Step 5: Solve for x
    x = 7,146,746,938.40/77,020.68
  6. Step 6: Final answer
    x = 92,789.97

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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.