Home / 42,035,810.40-63,065,525.40-20,471,115.60

Finding the Fourth Proportional to 42,035,810.40, 63,065,525.40 and 20,471,115.60

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Solution

The fourth proportional to 42,035,810.40, 63,065,525.40 and 20,471,115.60 is: 30,712,424.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,035,810.40 : 63,065,525.40 = 20,471,115.60 : x
  2. Step 2: Convert to fraction form
    42,035,810.40/63,065,525.40 = 20,471,115.60/x
  3. Step 3: Cross multiply
    42,035,810.40x = 63,065,525.40 × 20,471,115.60
  4. Step 4: Simplify right side
    42,035,810.40x = 1,291,021,660,838,136.25
  5. Step 5: Solve for x
    x = 1,291,021,660,838,136.25/42,035,810.40
  6. Step 6: Final answer
    x = 30,712,424.68

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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.