Home / 72,989.07-100,726.23-42,782.95

Finding the Fourth Proportional to 72,989.07, 100,726.23 and 42,782.95

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Solution

The fourth proportional to 72,989.07, 100,726.23 and 42,782.95 is: 59,041.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,989.07 : 100,726.23 = 42,782.95 : x
  2. Step 2: Convert to fraction form
    72,989.07/100,726.23 = 42,782.95/x
  3. Step 3: Cross multiply
    72,989.07x = 100,726.23 × 42,782.95
  4. Step 4: Simplify right side
    72,989.07x = 4,309,365,261.78
  5. Step 5: Solve for x
    x = 4,309,365,261.78/72,989.07
  6. Step 6: Final answer
    x = 59,041.24

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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.