Home / 72,742.03-100,368.95-42,521.51

Finding the Fourth Proportional to 72,742.03, 100,368.95 and 42,521.51

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Solution

The fourth proportional to 72,742.03, 100,368.95 and 42,521.51 is: 58,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,742.03 : 100,368.95 = 42,521.51 : x
  2. Step 2: Convert to fraction form
    72,742.03/100,368.95 = 42,521.51/x
  3. Step 3: Cross multiply
    72,742.03x = 100,368.95 × 42,521.51
  4. Step 4: Simplify right side
    72,742.03x = 4,267,839,311.11
  5. Step 5: Solve for x
    x = 4,267,839,311.11/72,742.03
  6. Step 6: Final answer
    x = 58,670.89

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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.