Home / 85,508,061.08-128,260,294.64-20,812,227.08

Finding the Fourth Proportional to 85,508,061.08, 128,260,294.64 and 20,812,227.08

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Solution

The fourth proportional to 85,508,061.08, 128,260,294.64 and 20,812,227.08 is: 31,217,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508,061.08 : 128,260,294.64 = 20,812,227.08 : x
  2. Step 2: Convert to fraction form
    85,508,061.08/128,260,294.64 = 20,812,227.08/x
  3. Step 3: Cross multiply
    85,508,061.08x = 128,260,294.64 × 20,812,227.08
  4. Step 4: Simplify right side
    85,508,061.08x = 2,669,382,377,395,386.50
  5. Step 5: Solve for x
    x = 2,669,382,377,395,386.50/85,508,061.08
  6. Step 6: Final answer
    x = 31,217,903.24

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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.