Home / 86,004,426.80-128,922,659.40-76,934,500.40

Finding the Fourth Proportional to 86,004,426.80, 128,922,659.40 and 76,934,500.40

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Solution

The fourth proportional to 86,004,426.80, 128,922,659.40 and 76,934,500.40 is: 115,326,626.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004,426.80 : 128,922,659.40 = 76,934,500.40 : x
  2. Step 2: Convert to fraction form
    86,004,426.80/128,922,659.40 = 76,934,500.40/x
  3. Step 3: Cross multiply
    86,004,426.80x = 128,922,659.40 × 76,934,500.40
  4. Step 4: Simplify right side
    86,004,426.80x = 9,918,600,391,178,364
  5. Step 5: Solve for x
    x = 9,918,600,391,178,364/86,004,426.80
  6. Step 6: Final answer
    x = 115,326,626.32

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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.