Home / 72,871.17-100,587.38-42,666.19

Finding the Fourth Proportional to 72,871.17, 100,587.38 and 42,666.19

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Solution

The fourth proportional to 72,871.17, 100,587.38 and 42,666.19 is: 58,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,871.17 : 100,587.38 = 42,666.19 : x
  2. Step 2: Convert to fraction form
    72,871.17/100,587.38 = 42,666.19/x
  3. Step 3: Cross multiply
    72,871.17x = 100,587.38 × 42,666.19
  4. Step 4: Simplify right side
    72,871.17x = 4,291,679,801.88
  5. Step 5: Solve for x
    x = 4,291,679,801.88/72,871.17
  6. Step 6: Final answer
    x = 58,894.07

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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.