Home / 72,741.72-100,368.52-42,521.20

Finding the Fourth Proportional to 72,741.72, 100,368.52 and 42,521.20

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Solution

The fourth proportional to 72,741.72, 100,368.52 and 42,521.20 is: 58,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,741.72 : 100,368.52 = 42,521.20 : x
  2. Step 2: Convert to fraction form
    72,741.72/100,368.52 = 42,521.20/x
  3. Step 3: Cross multiply
    72,741.72x = 100,368.52 × 42,521.20
  4. Step 4: Simplify right side
    72,741.72x = 4,267,789,714.85
  5. Step 5: Solve for x
    x = 4,267,789,714.85/72,741.72
  6. Step 6: Final answer
    x = 58,670.45

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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.