Home / 72,742.08-100,369.02-42,521.55

Finding the Fourth Proportional to 72,742.08, 100,369.02 and 42,521.55

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Solution

The fourth proportional to 72,742.08, 100,369.02 and 42,521.55 is: 58,670.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,742.08 : 100,369.02 = 42,521.55 : x
  2. Step 2: Convert to fraction form
    72,742.08/100,369.02 = 42,521.55/x
  3. Step 3: Cross multiply
    72,742.08x = 100,369.02 × 42,521.55
  4. Step 4: Simplify right side
    72,742.08x = 4,267,846,302.38
  5. Step 5: Solve for x
    x = 4,267,846,302.38/72,742.08
  6. Step 6: Final answer
    x = 58,670.94

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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.