Home / 84,006,019.80-125,867,312.10-40,782,151.80

Finding the Fourth Proportional to 84,006,019.80, 125,867,312.10 and 40,782,151.80

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Solution

The fourth proportional to 84,006,019.80, 125,867,312.10 and 40,782,151.80 is: 61,104,428.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,006,019.80 : 125,867,312.10 = 40,782,151.80 : x
  2. Step 2: Convert to fraction form
    84,006,019.80/125,867,312.10 = 40,782,151.80/x
  3. Step 3: Cross multiply
    84,006,019.80x = 125,867,312.10 × 40,782,151.80
  4. Step 4: Simplify right side
    84,006,019.80x = 5,133,139,828,720,176
  5. Step 5: Solve for x
    x = 5,133,139,828,720,176/84,006,019.80
  6. Step 6: Final answer
    x = 61,104,428.48

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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.