Home / 56,543,142.89-78,032,870.26-42,579,862.77

Finding the Fourth Proportional to 56,543,142.89, 78,032,870.26 and 42,579,862.77

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Solution

The fourth proportional to 56,543,142.89, 78,032,870.26 and 42,579,862.77 is: 58,762,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,543,142.89 : 78,032,870.26 = 42,579,862.77 : x
  2. Step 2: Convert to fraction form
    56,543,142.89/78,032,870.26 = 42,579,862.77/x
  3. Step 3: Cross multiply
    56,543,142.89x = 78,032,870.26 × 42,579,862.77
  4. Step 4: Simplify right side
    56,543,142.89x = 3,322,628,907,220,014.50
  5. Step 5: Solve for x
    x = 3,322,628,907,220,014.50/56,543,142.89
  6. Step 6: Final answer
    x = 58,762,720.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.