Home / 42,413,879.40-63,578,828.70-20,830,813.80

Finding the Fourth Proportional to 42,413,879.40, 63,578,828.70 and 20,830,813.80

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Solution

The fourth proportional to 42,413,879.40, 63,578,828.70 and 20,830,813.80 is: 31,225,597.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,413,879.40 : 63,578,828.70 = 20,830,813.80 : x
  2. Step 2: Convert to fraction form
    42,413,879.40/63,578,828.70 = 20,830,813.80/x
  3. Step 3: Cross multiply
    42,413,879.40x = 63,578,828.70 × 20,830,813.80
  4. Step 4: Simplify right side
    42,413,879.40x = 1,324,398,742,271,796.25
  5. Step 5: Solve for x
    x = 1,324,398,742,271,796.25/42,413,879.40
  6. Step 6: Final answer
    x = 31,225,597.87

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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.