Home / 72,521.19-100,079.15-40,693.05

Finding the Fourth Proportional to 72,521.19, 100,079.15 and 40,693.05

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Solution

The fourth proportional to 72,521.19, 100,079.15 and 40,693.05 is: 56,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,521.19 : 100,079.15 = 40,693.05 : x
  2. Step 2: Convert to fraction form
    72,521.19/100,079.15 = 40,693.05/x
  3. Step 3: Cross multiply
    72,521.19x = 100,079.15 × 40,693.05
  4. Step 4: Simplify right side
    72,521.19x = 4,072,525,651.44
  5. Step 5: Solve for x
    x = 4,072,525,651.44/72,521.19
  6. Step 6: Final answer
    x = 56,156.35

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1.5x scale

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.