Home / 66,985.98-92,440.71-40,144.05

Finding the Fourth Proportional to 66,985.98, 92,440.71 and 40,144.05

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Solution

The fourth proportional to 66,985.98, 92,440.71 and 40,144.05 is: 55,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,985.98 : 92,440.71 = 40,144.05 : x
  2. Step 2: Convert to fraction form
    66,985.98/92,440.71 = 40,144.05/x
  3. Step 3: Cross multiply
    66,985.98x = 92,440.71 × 40,144.05
  4. Step 4: Simplify right side
    66,985.98x = 3,710,944,484.28
  5. Step 5: Solve for x
    x = 3,710,944,484.28/66,985.98
  6. Step 6: Final answer
    x = 55,398.82

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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.