Home / 71,897.18-99,216.16-40,064.18

Finding the Fourth Proportional to 71,897.18, 99,216.16 and 40,064.18

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Solution

The fourth proportional to 71,897.18, 99,216.16 and 40,064.18 is: 55,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,897.18 : 99,216.16 = 40,064.18 : x
  2. Step 2: Convert to fraction form
    71,897.18/99,216.16 = 40,064.18/x
  3. Step 3: Cross multiply
    71,897.18x = 99,216.16 × 40,064.18
  4. Step 4: Simplify right side
    71,897.18x = 3,975,013,496.91
  5. Step 5: Solve for x
    x = 3,975,013,496.91/71,897.18
  6. Step 6: Final answer
    x = 55,287.48

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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.