Home / 77,707.15-107,231.95-45,869.90

Finding the Fourth Proportional to 77,707.15, 107,231.95 and 45,869.90

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Solution

The fourth proportional to 77,707.15, 107,231.95 and 45,869.90 is: 63,298.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,707.15 : 107,231.95 = 45,869.90 : x
  2. Step 2: Convert to fraction form
    77,707.15/107,231.95 = 45,869.90/x
  3. Step 3: Cross multiply
    77,707.15x = 107,231.95 × 45,869.90
  4. Step 4: Simplify right side
    77,707.15x = 4,918,718,344.48
  5. Step 5: Solve for x
    x = 4,918,718,344.48/77,707.15
  6. Step 6: Final answer
    x = 63,298.15

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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.