Home / 77,689.06-107,271.23-60,663.78

Finding the Fourth Proportional to 77,689.06, 107,271.23 and 60,663.78

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Solution

The fourth proportional to 77,689.06, 107,271.23 and 60,663.78 is: 83,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,689.06 : 107,271.23 = 60,663.78 : x
  2. Step 2: Convert to fraction form
    77,689.06/107,271.23 = 60,663.78/x
  3. Step 3: Cross multiply
    77,689.06x = 107,271.23 × 60,663.78
  4. Step 4: Simplify right side
    77,689.06x = 6,507,477,993.73
  5. Step 5: Solve for x
    x = 6,507,477,993.73/77,689.06
  6. Step 6: Final answer
    x = 83,763.12

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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.